Other Service Providers / 173000000X
Individual · classification
173000000X Legal Medicine
173000000X is the taxonomy code for Legal Medicine, in the NUCC group “Other Service Providers”. 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 173000000X
- 2Level Classification
- 3Medicare specialty Not in the crosswalk
- 4Codes in this group 38
Definition
The specialty areas of medicine concerned with matters of, and relations with, substantive law and legal institutions; such as the conduct of medical examinations at crime scenes, performance of autopsies, giving of expert medical testimony in judicial proceedings, medical treatment of inmates of penal institutions, the practice of trauma medicine in law enforcement settings, and other clinical practice and medical science applications in the fields of law, law enforcement, and corrections.
— NUCC Health Care Provider Taxonomy, version 26.1
Where 173000000X sits
- Group: Other Service Providers — code 17 of 38 in the group
- Classification: Legal Medicine 173000000X
Legal Medicine has no specializations, so 173000000X is the only code for it. A provider may report more than one taxonomy code on an NPI but marks one as primary.
Medicare
173000000X 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
No other codes share the classification Legal Medicine. The rest of Other Service Providers is on the group page.
History of 173000000X
NUCC's notes record no dated changes for 173000000X. 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 173000000X 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)
- 207LC0200X Critical Care Medicine (Anesthesiology) Physician (Allopathic & Osteopathic Physicians)
- 207LH0002X Hospice and Palliative Medicine (Anesthesiology) Physician (Allopathic & Osteopathic Physicians)
- 207LP2900X Pain Medicine (Anesthesiology) Physician (Allopathic & Osteopathic Physicians)
- 204R00000X Electrodiagnostic Medicine Physician (Allopathic & Osteopathic Physicians)
- 207P00000X Emergency Medicine Physician (Allopathic & Osteopathic Physicians)
Find providers with 173000000X
Using 173000000X
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.