Behavioral Health & Social Service Providers / 103TA0400X
Individual · specialization · Medicare specialty 62
103TA0400X Addiction (Substance Use Disorder) Psychologist
103TA0400X is the taxonomy code for Addiction (Substance Use Disorder), a specialization of Psychologist, in the NUCC group “Behavioral Health & Social Service Providers”. It is a code for individual providers — the kind used on a Type 1 NPI. Medicare maps it to specialty 62, Psychologist, Clinical, under which 1,025 practitioners are enrolled.
- 1Taxonomy code 103TA0400X
- 2Level Specialization
- 3Medicare specialty 62 Psychologist, Clinical
- 4Codes in this group 40
Definition
A psychologist with a proficiency that involves the application of psychological treatment of addiction stemming from the use of alcohol and other psychoactive substances (e.g., nicotine, marijuana, cocaine, heroin) or behavioral addictions (e.g., gambling) with the aim of cessation or reduction of use and/or the amelioration of emotional, behavioral, interpersonal and other problems arising from the addictive behavior.
— NUCC Health Care Provider Taxonomy, version 26.1
Where 103TA0400X sits
- Group: Behavioral Health & Social Service Providers — code 17 of 40 in the group
- Classification: Psychologist 103T00000X
- Specialization: Addiction (Substance Use Disorder) 103TA0400X
Choose 103TA0400X over the general Psychologist code (103T00000X) when the provider's training or certification is specifically in addiction (substance use disorder); the general code covers the classification as a whole. A provider may report more than one taxonomy code on an NPI but marks one as primary.
Medicare
CMS's taxonomy crosswalk links 103TA0400X to Medicare specialty 62 (Psychologist, Clinical). That specialty — not the taxonomy code itself — is what Medicare enrollment records and uses for payment. 1,025 practitioners are enrolled under it nationally, and 23 other taxonomy codes map to the same specialty.
Other codes under the same Medicare specialty: 103T00000X Psychologist; 103TA0700X Adult Development & Aging Psychologist; 103TB0200X Cognitive & Behavioral Psychologist; 103TC0700X Clinical Psychologist; 103TC1900X Counseling Psychologist; 103TC2200X Clinical Child & Adolescent Psychologist; 103TE1000X Psychologist; 103TE1100X Exercise & Sports Psychologist; and 15 more.
Related codes
| Code | Psychologist — other specializations |
|---|---|
| 103T00000X | Psychologist |
| 103TA0700X | Adult Development & Aging |
| 103TC0700X | Clinical |
| 103TC2200X | Clinical Child & Adolescent |
The nearest 4 of 21 other codes under Psychologist; all are on the group page.
History of 103TA0400X
103TA0400X was added to the code set in 2019.
- 2019-01-01 — new definition
Similar codes in other groups
If 103TA0400X is not quite right, these codes in other groups share a word with it — often the same field practised by a different kind of provider:
- 207LA0401X Addiction Medicine (Anesthesiology) Physician (Allopathic & Osteopathic Physicians)
- 207QA0401X Addiction Medicine (Family Medicine) Physician (Allopathic & Osteopathic Physicians)
- 207RA0401X Addiction Medicine (Internal Medicine) Physician (Allopathic & Osteopathic Physicians)
- 2083A0300X Addiction Medicine (Preventive Medicine) Physician (Allopathic & Osteopathic Physicians)
- 2084A0401X Addiction Medicine (Psychiatry & Neurology) Physician (Allopathic & Osteopathic Physicians)
- 2084P0802X Addiction Psychiatry Physician (Allopathic & Osteopathic Physicians)
Find providers with 103TA0400X
Using 103TA0400X
The code goes in the taxonomy field of the NPI application in NPPES, and on claims where a payer asks for it — box 24J (shaded) or 33b on the CMS-1500 with the ZZ qualifier, or the PRV segment of an 837 electronic claim. Payers match it against the taxonomy on the NPI record and, for Medicare, against the specialty on the enrollment, so all three should agree. To see which code a provider uses, search their NPI in the lookup.
Sources: NUCC Health Care Provider Taxonomy code set, version 26.1 (CSV); CMS Medicare Provider and Supplier Taxonomy Crosswalk, August 2026; CMS Medicare Fee-For-Service Public Provider Enrollment, extract of 2026-09-29. Checked 2026-10-24. Methodology.