Allopathic & Osteopathic Physicians / 207SC0300X
Individual · specialization
207SC0300X Clinical Cytogenetics Physician
207SC0300X is the taxonomy code for Clinical Cytogenetics, a specialization of Medical Genetics, in the NUCC group “Allopathic & Osteopathic Physicians”. It is a code for individual providers — the kind used on a Type 1 NPI. It has no entry in the CMS Medicare taxonomy crosswalk.
- 1Taxonomy code 207SC0300X
- 2Level Specialization
- 3Medicare specialty Not in the crosswalk
- 4Codes in this group 238
Definition
A clinical cytogeneticist demonstrates competence in providing laboratory diagnostic and clinical interpretive services dealing with cellular components, particularly chromosomes, associated with heredity.
— NUCC Health Care Provider Taxonomy, version 26.1
Where 207SC0300X sits
- Group: Allopathic & Osteopathic Physicians — code 75 of 238 in the group
- Classification: Medical Genetics
- Specialization: Clinical Cytogenetics 207SC0300X
Choose 207SC0300X over the general Medical Genetics code when the provider's training or certification is specifically in clinical cytogenetics; 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
207SC0300X has no entry in the CMS Medicare Provider and Supplier Taxonomy Crosswalk. That usually means Medicare does not enroll this kind of provider under its own specialty — the provider can still hold an NPI and use this code on claims to other payers.
Related codes
| Code | Medical Genetics — other specializations |
|---|---|
| 207SG0202X | Clinical Biochemical Genetics |
| 207SG0201X | Clinical Genetics (M.D.) |
| 207SG0203X | Clinical Molecular Genetics |
| 207SG0207X | Medical Biochemical Genetics |
The nearest 4 of 6 other codes under Medical Genetics; all are on the group page.
History of 207SC0300X
NUCC's earliest recorded change to 207SC0300X is from 2007 (definition added, source added).
- 2007-07-01 — definition added, source added
Similar codes in other groups
If 207SC0300X 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:
- 103G00000X Clinical Neuropsychologist (Behavioral Health & Social Service Providers)
- 103GC0700X Clinical Neuropsychologist (Behavioral Health & Social Service Providers)
- 103TC0700X Clinical Psychologist (Behavioral Health & Social Service Providers)
- 103TC2200X Clinical Child & Adolescent Psychologist (Behavioral Health & Social Service Providers)
- 1041C0700X Clinical Social Worker (Behavioral Health & Social Service Providers)
- 174V00000X Clinical Ethicist (Other Service Providers)
Find providers with 207SC0300X
Using 207SC0300X
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). Checked 2026-10-24. Methodology.