Taxonomy Codes for Mental Health Therapists
Your taxonomy code tells insurance payers, NPPES, and CAQH exactly what type of provider you are. Using the wrong code is one of the most common reasons credentialing applications stall.
What Is a Taxonomy Code?
A healthcare taxonomy code is a 10-character alphanumeric code maintained by the National Uniform Claim Committee (NUCC) that classifies healthcare providers by specialty, classification, and area of specialization.
Your taxonomy code appears on your:
- NPI record (NPPES portal)
- CAQH ProView profile
- Insurance credentialing applications
- CMS-855 forms (Medicare enrollment)
- Electronic claims (837P transactions)
If your taxonomy code doesn’t match your license type and the payer’s expectations, your credentialing application may be returned, delayed, or denied outright.
Common Mental Health Taxonomy Codes
Below are the most frequently used taxonomy codes for mental health and behavioral health providers.
Individual Provider Codes (Type 1 NPI)
| Taxonomy Code | Provider Type | Typical License |
|---|---|---|
| 104100000X | Social Worker | LCSW, LMSW |
| 1041C0700X | Clinical Social Worker | LCSW |
| 101YM0800X | Mental Health Counselor | LMHC, LCMHC, LPCC |
| 101YP0004X | Professional Counselor | LPC, LCPC |
| 106H00000X | Marriage & Family Therapist | LMFT |
| 103TC0700X | Clinical Psychologist | PsyD, PhD |
| 2084P0800X | Psychiatrist | MD, DO |
| 363LP0200X | Psychiatric NP | PMHNP |
| 101Y00000X | Counselor (General) | Various |
| 101YA0400X | Addiction Counselor | CASAC, LCADC |
Group/Organization Codes (Type 2 NPI)
| Taxonomy Code | Organization Type |
|---|---|
| 251S00000X | Community/Behavioral Health Center |
| 261QM0801X | Mental Health Clinic |
| 193200000X | Multi-Specialty Group Practice |
| 193400000X | Single Specialty Group Practice |
LCSWs often select the generic “Social Worker” code (104100000X) when they should use “Clinical Social Worker” (1041C0700X). The clinical-specific code is required by most insurance payers for credentialing and billing therapy services.
How to Choose the Right Taxonomy Code
Step 1: Match to Your License
Your taxonomy code must correspond to your state-issued clinical license. If you hold an LCSW, your primary taxonomy should be 1041C0700X (Clinical Social Worker), not the general Social Worker code.
Step 2: Check Payer Requirements
Some insurance payers require specific taxonomy codes. For example, Aetna and UnitedHealthcare may require the specialization-level code (e.g., Mental Health Counselor) rather than the broader category (e.g., Counselor).
Step 3: Align NPI and CAQH
Your taxonomy code on your NPI record and CAQH ProView profile must match exactly. Discrepancies between NPPES and CAQH are a top reason for credentialing delays.
Step 4: Set a Primary Code
If you have multiple licenses (e.g., LCSW and CASAC), you can list both taxonomy codes but must designate one as primary. Choose the one that represents your primary billing specialty.
You can look up and verify taxonomy codes at the official NUCC website: nucc.org
Where to Update Your Taxonomy Code
You need to update your taxonomy code in two primary places:
- NPPES Portal — Log into nppes.cms.hhs.gov, navigate to your NPI record, and update the taxonomy under “Taxonomy Information.”
- CAQH ProView — Log into your CAQH profile and update your specialty/taxonomy under the “Professional IDs” or “Specialties” section. Re-attest after changes.
- Insurance Payers — If you’ve already submitted credentialing applications, contact each payer to update your taxonomy if it has changed.
Common Questions
A taxonomy code is a 10-character alphanumeric code that identifies a healthcare provider’s specialty, classification, and area of specialization. It is maintained by the National Uniform Claim Committee (NUCC).
Yes. You can list multiple taxonomy codes on your NPI record, but you must designate one as your primary taxonomy. Many therapists with dual licenses list both.
Using an incorrect taxonomy code can lead to claim denials, credentialing delays, and compliance issues. Payers verify your taxonomy against your license type, so mismatches cause rejections.
You update your taxonomy code through the NPPES portal (for your NPI record) and separately in your CAQH ProView profile. Both must match for credentialing to proceed smoothly.
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