Behavioral Health & Social Service Providers / 101YM0800X
Individual · specialization · Medicare specialty E2
101YM0800X Mental Health Counselor
101YM0800X is the taxonomy code for Mental Health, a specialization of Counselor, 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 E2, Licensed Professional Counselor, under which 71,777 practitioners are enrolled.
- 1Taxonomy code 101YM0800X
- 2Level Specialization
- 3Medicare specialty E2 Licensed Professional Counselor
- 4Codes in this group 40
Definition
NUCC publishes no definition for 101YM0800X; the code is identified by its place in the tree below.
Where 101YM0800X sits
- Group: Behavioral Health & Social Service Providers — code 8 of 40 in the group
- Classification: Counselor 101Y00000X
- Specialization: Mental Health 101YM0800X
Choose 101YM0800X over the general Counselor code (101Y00000X) when the provider's training or certification is specifically in mental health; 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 101YM0800X to Medicare specialty E2 (Licensed Professional Counselor). That specialty — not the taxonomy code itself — is what Medicare enrollment records and uses for payment. 71,777 practitioners are enrolled under it nationally, and 1 other taxonomy code map to the same specialty.
Other codes under the same Medicare specialty: 101YP2500X Professional Counselor.
Related codes
| Code | Counselor — other specializations |
|---|---|
| 101Y00000X | Counselor |
| 101YA0400X | Addiction (Substance Use Disorder) |
| 101YP1600X | Pastoral |
| 101YP2500X | Professional |
| 101YS0200X | School |
History of 101YM0800X
NUCC's notes record no dated changes for 101YM0800X. The code set is republished every January and July, when codes are added, retitled or marked inactive; this page reflects version 26.1, so check the NUCC site if you are reading it after the next release.
Similar codes in other groups
If 101YM0800X 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:
- 163WP0808X Psychiatric/Mental Health Registered Nurse (Nursing Service Providers)
- 163WP0809X Adult Psychiatric/Mental Health Registered Nurse (Nursing Service Providers)
- 163WP0807X Child & Adolescent Psychiatric/Mental Health Registered Nurse (Nursing Service Providers)
- 364SP0808X Psychiatric/Mental Health Clinical Nurse Specialist (Physician Assistants & Advanced Practice Nursing Providers)
- 364SP0809X Adult Psychiatric/Mental Health Clinical Nurse Specialist (Physician Assistants & Advanced Practice Nursing Providers)
- 364SP0807X Child & Adolescent Psychiatric/Mental Health Clinical Nurse Specialist (Physician Assistants & Advanced Practice Nursing Providers)
Find providers with 101YM0800X
Using 101YM0800X
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.