111NN0400X Neurology Chiropractor

Definition

Chiropractic Neurology is defined as the field of functional neurology that engages the internal - and external environment of the individual in a structured and targeted approach to affect positive changes in the nervous system and consequently the physiology and behavior of an individual. Chiropractic Neurologists are board-certified specialists in non-drug, non-surgical care for those with neurologically based health problems. There are many conditions people suffer from that are in this broad category: learning and attention disorders, headaches, vertigo, pain syndromes, developmental disorders, nerve injury, spinal cord injury, head injury or stroke, movement disorders, and many other conditions.

— NUCC Health Care Provider Taxonomy, version 26.1

Where 111NN0400X sits

• Group: Chiropractic Providers — code 4 of 12 in the group
• Classification: Chiropractor 111N00000X
• Specialization: Neurology 111NN0400X

Choose 111NN0400X over the general Chiropractor code (111N00000X) when the provider's training or certification is specifically in neurology; 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 111NN0400X to Medicare specialty 35 (Chiropractic). That specialty — not the taxonomy code itself — is what Medicare enrollment records and uses for payment. 45,873 practitioners are enrolled under it nationally, and 11 other taxonomy codes map to the same specialty.

Other codes under the same Medicare specialty: 111N00000X Chiropractor; 111NI0013X Independent Medical Examiner Chiropractor; 111NI0900X Internist Chiropractor; 111NN1001X Nutrition Chiropractor; 111NP0017X Pediatric Chiropractor; 111NR0200X Radiology Chiropractor; 111NR0400X Rehabilitation Chiropractor; 111NS0005X Sports Physician Chiropractor; and 3 more.

Related codes

The nearest 6 of 11 other codes under Chiropractor; all are on the group page.

History of 111NN0400X

NUCC's earliest recorded change to 111NN0400X is from 2009 (definition added).

• 2009-07-01 — definition added

Similar codes in other groups

If 111NN0400X 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:

• 2084B0040X Behavioral Neurology & Neuropsychiatry Physician (Allopathic & Osteopathic Physicians)
• 2084N0400X Neurology Physician (Allopathic & Osteopathic Physicians)
• 2084N0402X Neurology with Special Qualifications in Child Neurology Physician (Allopathic & Osteopathic Physicians)
• 2084V0102X Vascular Neurology Physician (Allopathic & Osteopathic Physicians)
• 2251N0400X Neurology Physical Therapist (Respiratory, Developmental, Rehabilitative and Restorative Service Providers)

Using 111NN0400X

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.