G43.809Other migraine, not intractable, without status migrainosus

G43.809 is the ICD-10-CM diagnosis code for other migraine, not intractable, without status migrainosus. It belongs to category G43 (migraine), block G40-G47 (episodic and paroxysmal disorders) and chapter 6 (diseases of the nervous system). It is billable, so it can be reported on its own for dates of service from October 1, 2026 through September 30, 2027.

Within G43.80, choose G43.809 (without status migrainosus) only when documentation doesn't support a more specific option: with status migrainosus (G43.801).

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

It is not a CC or MCC, so as a secondary diagnosis it doesn't change the MS-DRG severity level.

In MS-DRG v44.0, it is part of the grouping logic for DRG 102 (Headaches with MCC, relative weight 1.1201) and DRG 103 (Headaches without MCC, relative weight 0.822), in MDC 01 (Diseases and Disorders of the Nervous System), as a principal or secondary diagnosis. The DRG a claim lands in depends on the principal diagnosis, procedures and any CC/MCC secondary diagnoses.

It has been part of ICD-10-CM since the code set took effect on October 1, 2015 and hasn't changed since.

Before ICD-10, this condition was coded in ICD-9-CM as 346.20 (variants of migraine, not elsewhere classified, without mention of intractable migraine without mention of status migrainosus) and 346.80 (other forms of migraine, without mention of intractable migraine without mention of status migrainosus).