Billing Status: YES. This is a valid, specific, and billable ICD-10-CM reference.

Inpatient Payment Groups (MS-DRG)

MS-DRGs this diagnosis helps define, as principal or secondary, per the CMS ICD-10-CM/PCS MS-DRG Definitions Manual v43.0 (FY2026), Appendix B.

A diagnosis appearing in a group's logic does not by itself determine the DRG assigned to a stay; the grouper uses the full claim.

Code Set: Valid FY2026 and FY2027. FY2026 took effect October 1, 2025.

Official Registry Overview & Definition

Migraine, unspecified, not intractable, with status migrainosus is a billable ICD-10-CM diagnosis code (G43.901).

Sequencing, inclusion, and exclusion notes published for G43.901 in the official ICD-10-CM tabular list.

Alternative terms the tabular list files under this code.

Conditions that can never be reported with this code; the two are mutually exclusive.

Conditions not covered by this code, but which may be reported alongside it when both are present.

Supplementary codes the tabular list directs you to add.

Use additional code for adverse effect, if applicable, to identify drug (T36-T50 with fifth or sixth character 5)

Official ICD-10-CM classifications closest to G43.901 in its code family, with their registry titles.

Clinical term phrases from the official ICD-10-CM Index to Diseases and Injuries that map to this code.