1835P0018X Pharmacist Clinician (PhC)/ Clinical Pharmacy Specialist

Definition

Pharmacist Clinician/Clinical Pharmacy Specialist is a pharmacist with additional training and an expanded scope of practice that may include prescriptive authority, therapeutic management, and disease management.

— NUCC Health Care Provider Taxonomy, version 26.1

Where 1835P0018X sits

• Group: Pharmacy Service Providers — code 15 of 19 in the group
• Classification: Pharmacist 183500000X
• Specialization: Pharmacist Clinician (PhC)/ Clinical Pharmacy Specialist 1835P0018X

Choose 1835P0018X over the general Pharmacist code (183500000X) when the provider's training or certification is specifically in pharmacist clinician (phc)/ clinical pharmacy specialist; 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

1835P0018X 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

The nearest 6 of 17 other codes under Pharmacist; all are on the group page.

History of 1835P0018X

1835P0018X was added to the code set in 2008.

• 2008-01-01 — new

Similar codes in other groups

If 1835P0018X 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:

• 207KI0005X Clinical & Laboratory Immunology (Allergy & Immunology) Physician (Allopathic & Osteopathic Physicians)
• 208U00000X Clinical Pharmacology Physician (Allopathic & Osteopathic Physicians)
• 207NI0002X Clinical & Laboratory Dermatological Immunology Physician (Allopathic & Osteopathic Physicians)
• 207RI0001X Clinical & Laboratory Immunology (Internal Medicine) Physician (Allopathic & Osteopathic Physicians)
• 207RC0001X Clinical Cardiac Electrophysiology Physician (Allopathic & Osteopathic Physicians)
• 207SG0202X Clinical Biochemical Genetics Physician (Allopathic & Osteopathic Physicians)

Using 1835P0018X

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.