> ## Documentation Index
> Fetch the complete documentation index at: https://docs.getsolum.com/llms.txt
> Use this file to discover all available pages before exploring further.

# Service Type Codes

> Mapping between official X12 service type codes and Solum service types used in the Eligibility API.

# X12 Service Type Code Mapping

When working with the Solum Eligibility API, service types are returned as human-readable `snake_case` values (e.g., `mental_health`, `physical_therapy`). These map directly to the official **X12 271 Eligibility Benefit Inquiry** service type codes used in EDI transactions.

This reference shows how each X12 code translates to its Solum `service_type` value.

***

## General & Plan-Level

| X12 Code | Solum Service Type             | Description                  |
| -------- | ------------------------------ | ---------------------------- |
| 1        | `medical_care`                 | Medical Care                 |
| 9        | `other_medical`                | Other Medical                |
| 30       | `health_benefit_plan_coverage` | Health Benefit Plan Coverage |
| 32       | `plan_waiting_period`          | Plan Waiting Period          |
| 55       | `major_medical`                | Major Medical                |
| 60       | `general_benefits`             | General Benefits             |

## Surgical

| X12 Code | Solum Service Type               | Description                      |
| -------- | -------------------------------- | -------------------------------- |
| 2        | `surgical`                       | Surgical                         |
| 7        | `anesthesia`                     | Anesthesia                       |
| 8        | `surgical_assistance`            | Surgical Assistance              |
| 20       | `second_surgical_opinion`        | Second Surgical Opinion          |
| 21       | `third_surgical_opinion`         | Third Surgical Opinion           |
| 97       | `anesthesiologist`               | Anesthesiologist                 |
| CC       | `surgical_benefits_professional` | Surgical Benefits - Professional |
| CD       | `surgical_benefits_facility`     | Surgical Benefits - Facility     |

## Diagnostic & Lab

| X12 Code | Solum Service Type            | Description                   |
| -------- | ----------------------------- | ----------------------------- |
| 4        | `diagnostic_x_ray`            | Diagnostic X-Ray              |
| 5        | `diagnostic_lab`              | Diagnostic Lab                |
| 62       | `mri_cat_scan`                | MRI/CAT Scan                  |
| 66       | `pathology`                   | Pathology                     |
| 73       | `diagnostic_medical`          | Diagnostic Medical            |
| CK       | `screening_x_ray`             | Screening X-Ray               |
| CL       | `screening_laboratory`        | Screening Laboratory          |
| CM       | `mammogram_high_risk_patient` | Mammogram - High Risk Patient |
| CN       | `mammogram_low_risk_patient`  | Mammogram - Low Risk Patient  |

## Hospital & Inpatient

| X12 Code | Solum Service Type             | Description                    |
| -------- | ------------------------------ | ------------------------------ |
| 47       | `hospital`                     | Hospital                       |
| 48       | `hospital_inpatient`           | Hospital - Inpatient           |
| 49       | `hospital_room_and_board`      | Hospital - Room and Board      |
| 50       | `hospital_outpatient`          | Hospital - Outpatient          |
| 51       | `hospital_emergency_accident`  | Hospital - Emergency Accident  |
| 52       | `hospital_emergency_medical`   | Hospital - Emergency Medical   |
| 53       | `hospital_ambulatory_surgical` | Hospital - Ambulatory Surgical |
| 54       | `long_term_care`               | Long Term Care                 |
| IC       | `intensive_care`               | Intensive Care                 |
| C1       | `coronary_care`                | Coronary Care                  |
| UC       | `urgent_care`                  | Urgent Care                    |

## Mental Health & Behavioral

| X12 Code | Solum Service Type                    | Description                           |
| -------- | ------------------------------------- | ------------------------------------- |
| MH       | `mental_health`                       | Mental Health                         |
| A4       | `psychiatric`                         | Psychiatric                           |
| A5       | `psychiatric_room_and_board`          | Psychiatric - Room and Board          |
| A6       | `psychotherapy`                       | Psychotherapy                         |
| A7       | `psychiatric_inpatient`               | Psychiatric - Inpatient               |
| A8       | `psychiatric_outpatient`              | Psychiatric - Outpatient              |
| BB       | `partial_hospitalization_psychiatric` | Partial Hospitalization - Psychiatric |
| BC       | `day_care_psychiatric`                | Day Care - Psychiatric                |
| BD       | `cognitive_therapy`                   | Cognitive Therapy                     |
| CE       | `mental_health_provider_inpatient`    | Mental Health Provider - Inpatient    |
| CF       | `mental_health_provider_outpatient`   | Mental Health Provider - Outpatient   |
| CG       | `mental_health_facility_inpatient`    | Mental Health Facility - Inpatient    |
| CH       | `mental_health_facility_outpatient`   | Mental Health Facility - Outpatient   |
| RT       | `residential_psychiatric_treatment`   | Residential Psychiatric Treatment     |
| 22       | `social_work`                         | Social Work                           |

## Substance Abuse

| X12 Code | Solum Service Type                    | Description                           |
| -------- | ------------------------------------- | ------------------------------------- |
| AI       | `substance_abuse`                     | Substance Abuse                       |
| AJ       | `alcoholism`                          | Alcoholism                            |
| AK       | `drug_addiction`                      | Drug Addiction                        |
| CI       | `substance_abuse_facility_inpatient`  | Substance Abuse Facility - Inpatient  |
| CJ       | `substance_abuse_facility_outpatient` | Substance Abuse Facility - Outpatient |

## Rehabilitation & Therapy

| X12 Code | Solum Service Type              | Description                     |
| -------- | ------------------------------- | ------------------------------- |
| PT       | `physical_therapy`              | Physical Therapy                |
| AD       | `occupational_therapy`          | Occupational Therapy            |
| AF       | `speech_therapy`                | Speech Therapy                  |
| AE       | `physical_medicine`             | Physical Medicine               |
| BE       | `massage_therapy`               | Massage Therapy                 |
| A9       | `rehabilitation`                | Rehabilitation                  |
| AA       | `rehabilitation_room_and_board` | Rehabilitation - Room and Board |
| AB       | `rehabilitation_inpatient`      | Rehabilitation - Inpatient      |
| AC       | `rehabilitation_outpatient`     | Rehabilitation - Outpatient     |
| BF       | `pulmonary_rehabilitation`      | Pulmonary Rehabilitation        |
| BG       | `cardiac_rehabilitation`        | Cardiac Rehabilitation          |

## Professional Visits

| X12 Code | Solum Service Type                            | Description                                   |
| -------- | --------------------------------------------- | --------------------------------------------- |
| 3        | `consultation`                                | Consultation                                  |
| 96       | `professional_physician`                      | Professional (Physician)                      |
| 98       | `professional_visit_office`                   | Professional Visit - Office                   |
| 99       | `professional_visit_inpatient`                | Professional Visit - Inpatient                |
| A0       | `professional_visit_outpatient`               | Professional Visit - Outpatient               |
| A1       | `professional_visit_nursing_home`             | Professional Visit - Nursing Home             |
| A2       | `professional_visit_skilled_nursing_facility` | Professional Visit - Skilled Nursing Facility |
| A3       | `professional_visit_home`                     | Professional Visit - Home                     |
| BY       | `physician_visit_office_sick`                 | Physician Visit - Office (Sick)               |
| BZ       | `physician_visit_office_well`                 | Physician Visit - Office (Well)               |
| 81       | `routine_physical`                            | Routine Physical                              |
| AQ       | `nonmedically_necessary_physical`             | Nonmedically Necessary Physical               |
| BA       | `independent_medical_evaluation`              | Independent Medical Evaluation                |

## Preventive & Wellness

| X12 Code | Solum Service Type      | Description           |
| -------- | ----------------------- | --------------------- |
| 17       | `pre_admission_testing` | Pre-Admission Testing |
| 19       | `pneumonia_vaccine`     | Pneumonia Vaccine     |
| 67       | `smoking_cessation`     | Smoking Cessation     |
| 68       | `well_baby_care`        | Well Baby Care        |
| 79       | `allergy_testing`       | Allergy Testing       |
| 80       | `immunizations`         | Immunizations         |
| CO       | `flu_vaccination`       | Flu Vaccination       |
| GY       | `allergy`               | Allergy               |

## Maternity & Reproductive

| X12 Code | Solum Service Type          | Description               |
| -------- | --------------------------- | ------------------------- |
| 61       | `in_vitro_fertilization`    | In Vitro Fertilization    |
| 65       | `newborn_care`              | Newborn Care              |
| 69       | `maternity`                 | Maternity                 |
| 82       | `family_planning`           | Family Planning           |
| 83       | `infertility`               | Infertility               |
| 84       | `abortion`                  | Abortion                  |
| BT       | `gynecological`             | Gynecological             |
| BU       | `obstetrical`               | Obstetrical               |
| BV       | `obstetrical_gynecological` | Obstetrical/Gynecological |
| BI       | `nursery`                   | Nursery                   |
| NI       | `neonatal_intensive_care`   | Neonatal Intensive Care   |
| TN       | `transitional_nursery_care` | Transitional Nursery Care |

## Dental

| X12 Code | Solum Service Type           | Description                  |
| -------- | ---------------------------- | ---------------------------- |
| 23       | `diagnostic_dental`          | Diagnostic Dental            |
| 24       | `periodontics`               | Periodontics                 |
| 25       | `restorative`                | Restorative                  |
| 26       | `endodontics`                | Endodontics                  |
| 27       | `maxillofacial_prosthetics`  | Maxillofacial Prosthetics    |
| 28       | `adjunctive_dental_services` | Adjunctive Dental Services   |
| 33       | `chiropractic`               | Chiropractic                 |
| 34       | `chiropractic_office_visits` | Chiropractic - Office Visits |
| 35       | `dental_care`                | Dental Care                  |
| 36       | `dental_crowns`              | Dental Crowns                |
| 37       | `dental_accident`            | Dental Accident              |
| 38       | `orthodontics`               | Orthodontics                 |
| 39       | `prosthodontics`             | Prosthodontics               |
| 40       | `oral_surgery`               | Oral Surgery                 |
| 41       | `routine_preventive_dental`  | Routine Preventive Dental    |

## Vision

| X12 Code | Solum Service Type        | Description             |
| -------- | ------------------------- | ----------------------- |
| AL       | `vision_optometry`        | Vision (Optometry)      |
| AM       | `frames`                  | Frames                  |
| AN       | `routine_exam`            | Routine Exam            |
| AO       | `lenses`                  | Lenses                  |
| BR       | `eye`                     | Eye                     |
| CP       | `eyewear_and_accessories` | Eyewear and Accessories |

## Pharmacy & Prescriptions

| X12 Code | Solum Service Type                           | Description                                  |
| -------- | -------------------------------------------- | -------------------------------------------- |
| 88       | `pharmacy`                                   | Pharmacy                                     |
| 89       | `free_standing_prescription_drug`            | Free Standing Prescription Drug              |
| 90       | `mail_order_prescription_drug`               | Mail Order Prescription Drug                 |
| 91       | `brand_name_prescription_drug`               | Brand Name Prescription Drug                 |
| 92       | `generic_prescription_drug`                  | Generic Prescription Drug                    |
| B2       | `brand_name_prescription_drug_formulary`     | Brand Name Prescription Drug - Formulary     |
| B3       | `brand_name_prescription_drug_non_formulary` | Brand Name Prescription Drug - Non-Formulary |
| BW       | `mail_order_prescription_drug_brand_name`    | Mail Order Prescription Drug - Brand Name    |
| BX       | `mail_order_prescription_drug_generic`       | Mail Order Prescription Drug - Generic       |
| GF       | `generic_prescription_drug_formulary`        | Generic Prescription Drug - Formulary        |
| GN       | `generic_prescription_drug_non_formulary`    | Generic Prescription Drug - Non-Formulary    |
| AR       | `experimental_drug_therapy`                  | Experimental Drug Therapy                    |

## DME & Supplies

| X12 Code | Solum Service Type                   | Description                          |
| -------- | ------------------------------------ | ------------------------------------ |
| DM       | `durable_medical_equipment`          | Durable Medical Equipment            |
| 11       | `used_durable_medical_equipment`     | Used Durable Medical Equipment       |
| 12       | `durable_medical_equipment_purchase` | Durable Medical Equipment - Purchase |
| 18       | `durable_medical_equipment_rental`   | Durable Medical Equipment - Rental   |
| 75       | `prosthetic_device`                  | Prosthetic Device                    |
| DS       | `diabetic_supplies`                  | Diabetic Supplies                    |

## Home Health & Nursing

| X12 Code | Solum Service Type                    | Description                           |
| -------- | ------------------------------------- | ------------------------------------- |
| 42       | `home_health_care`                    | Home Health Care                      |
| 43       | `home_health_prescriptions`           | Home Health Prescriptions             |
| 44       | `home_health_visits`                  | Home Health Visits                    |
| 45       | `hospice`                             | Hospice                               |
| 46       | `respite_care`                        | Respite Care                          |
| 74       | `private_duty_nursing`                | Private Duty Nursing                  |
| AG       | `skilled_nursing_care`                | Skilled Nursing Care                  |
| AH       | `skilled_nursing_care_room_and_board` | Skilled Nursing Care - Room and Board |
| CA       | `private_duty_nursing_inpatient`      | Private Duty Nursing - Inpatient      |
| CB       | `private_duty_nursing_home`           | Private Duty Nursing - Home           |

## Specialty Care

| X12 Code | Solum Service Type             | Description                    |
| -------- | ------------------------------ | ------------------------------ |
| 6        | `radiation_therapy`            | Radiation Therapy              |
| 10       | `blood_charges`                | Blood Charges                  |
| 64       | `acupuncture`                  | Acupuncture                    |
| 70       | `transplants`                  | Transplants                    |
| 71       | `audiology_exam`               | Audiology Exam                 |
| 72       | `inhalation_therapy`           | Inhalation Therapy             |
| 77       | `otological_exam`              | Otological Exam                |
| 78       | `chemotherapy`                 | Chemotherapy                   |
| 85       | `aids`                         | AIDS                           |
| 86       | `emergency_services`           | Emergency Services             |
| 87       | `cancer`                       | Cancer                         |
| 93       | `podiatry`                     | Podiatry                       |
| 94       | `podiatry_office_visits`       | Podiatry - Office Visits       |
| 95       | `podiatry_nursing_home_visits` | Podiatry - Nursing Home Visits |
| B1       | `burn_care`                    | Burn Care                      |
| BH       | `pediatric`                    | Pediatric                      |
| BJ       | `skin`                         | Skin                           |
| BK       | `orthopedic`                   | Orthopedic                     |
| BL       | `cardiac`                      | Cardiac                        |
| BM       | `lymphatic`                    | Lymphatic                      |
| BN       | `gastrointestinal`             | Gastrointestinal               |
| BP       | `endocrine`                    | Endocrine                      |
| BQ       | `neurology`                    | Neurology                      |
| BS       | `invasive_procedures`          | Invasive Procedures            |
| CQ       | `case_management`              | Case Management                |
| DG       | `dermatology`                  | Dermatology                    |
| ON       | `oncology`                     | Oncology                       |
| PU       | `pulmonary`                    | Pulmonary                      |
| RN       | `renal`                        | Renal                          |

## Renal & Dialysis

| X12 Code | Solum Service Type                | Description                     |
| -------- | --------------------------------- | ------------------------------- |
| 14       | `renal_supplies_in_home`          | Renal Supplies in Home          |
| 15       | `alternate_method_dialysis`       | Alternate Method Dialysis       |
| 16       | `chronic_renal_disease_equipment` | Chronic Renal Disease Equipment |
| 76       | `dialysis`                        | Dialysis                        |

## Transportation

| X12 Code | Solum Service Type                 | Description                      |
| -------- | ---------------------------------- | -------------------------------- |
| 56       | `medically_related_transportation` | Medically Related Transportation |
| 57       | `air_transportation`               | Air Transportation               |
| 58       | `cabulance`                        | Cabulance                        |
| 59       | `licensed_ambulance`               | Licensed Ambulance               |

## Transitional Care

| X12 Code | Solum Service Type                   | Description                        |
| -------- | ------------------------------------ | ---------------------------------- |
| 13       | `ambulatory_service_center_facility` | Ambulatory Service Center Facility |
| 63       | `donor_procedures`                   | Donor Procedures                   |
| TC       | `transitional_care`                  | Transitional Care                  |

***

## Usage in the API

Service types appear in eligibility check responses under `extracted_data.services`. Each entry includes the Solum `service_type`, the original X12 `service_type_code`, and per-network benefit details:

```json theme={null}
{
  "extracted_data": {
    "services": [
      {
        "service_type": "mental_health",
        "service_type_code": "MH",
        "copay_in_network": 25.0,
        "copay_out_network": null,
        "co_insurance_in_network": 20.0,
        "co_insurance_out_network": 40.0,
        "visit_limit_in_network": 52.0,
        "visit_limit_out_network": null,
        "visit_limit_remaining_in_network": 38.0,
        "visit_limit_remaining_out_network": null,
        "has_matching_benefits": true
      },
      {
        "service_type": "physical_therapy",
        "service_type_code": "PT",
        "copay_in_network": 40.0,
        "copay_out_network": null,
        "co_insurance_in_network": null,
        "co_insurance_out_network": null,
        "visit_limit_in_network": 30.0,
        "visit_limit_out_network": null,
        "visit_limit_remaining_in_network": 18.0,
        "visit_limit_remaining_out_network": null,
        "has_matching_benefits": true
      }
    ]
  }
}
```

<Note>
  When an unknown X12 code is encountered during eligibility processing, Solum defaults to `health_benefit_plan_coverage` (code `30`).
</Note>