G43.909 — Migraine, unspecified, not intractable, without status migrainosus
Is G43.909 billable?
Yes, but G43.909 is an unspecified code. G43.909 is a valid, billable ICD-10-CM code for encounters from October 1, 2026 through September 30, 2027. However, G43.909 is an unspecified or catch-all code. Payers apply additional scrutiny to unspecified codes and many deny them when the medical record supports a more specific option, so check the documentation before selecting G43.909 — the more specific alternatives are listed below.
More specific alternatives
G43.909 at a glance
| Code | G43.909 |
|---|---|
| Description | Migraine, unspecified, not intractable, without status migrainosus |
| Billable | Yes |
| Code set | ICD-10-CM FY2027 |
| Valid for encounters | October 1, 2026 – September 30, 2027 |
Which MS-DRGs does G43.909 group to?
G43.909 sits in MDC 01 and helps define the logic of 2 MS-DRGs (version 44, FY2027). Which one a stay actually groups to also depends on procedures and secondary diagnoses.
- 102Headaches with MCCmedical
- 103Headaches without MCCmedical
How is G43.909 listed in the Alphabetic Index?
These are the routes through the Alphabetic Index that lead to G43.909. They show the wording a clinician may have documented, which often differs from the Tabular description.
- Migraine (idiopathic)
- Headache › migraine
- Hemicrania › meaning migraine
- Migraine › not intractable (idiopathic)
- Migraine › without refractory migraine (idiopathic)
- Syndrome › migraine
- Migraine › not intractable › without status migrainosus (idiopathic)
- Migraine › without refractory migraine › without status migrainosus (idiopathic)
Inclusion terms
Alternative wording in documentation that is classified to G43.909.
- Migraine NOS
Excludes1 — never code together — inherited from G43
The conditions below can never be reported together with G43.909 on the same claim. An Excludes1 note means the two conditions cannot occur in the same patient, so reporting both is a coding error.
- lower half migraine (G44.00)
Use additional code — inherited from G43
Report an additional code alongside G43.909 to fully describe the condition. G43.909 is sequenced first.
- code for adverse effect, if applicable, to identify drug (T36-T50 with fifth or sixth character 5)
Excludes2 — not included here — inherited from Chapter 6
The conditions below are not part of G43.909, but a patient may have both at the same time. When documentation supports it, G43.909 and the excluded code may both be reported.
- certain conditions originating in the perinatal period (P04-P96)
- certain infectious and parasitic diseases (A00-B99)
- complications of pregnancy, childbirth and the puerperium (O00-O9A)
- congenital malformations, deformations, and chromosomal abnormalities (Q00-Q99)
- endocrine, nutritional and metabolic diseases (E00-E88)
- injury, poisoning and certain other consequences of external causes (S00-T88)
- neoplasms (C00-D49)
- symptoms, signs and abnormal clinical and laboratory findings, not elsewhere classified (R00-R94)
Excludes2 — not included here — inherited from G43
The conditions below are not part of G43.909, but a patient may have both at the same time. When documentation supports it, G43.909 and the excluded code may both be reported.
How long has G43.909 existed?
G43.909 has been in ICD-10-CM since at least FY2016, the earliest fiscal year on record here.
Derived from the official order files for FY2016–FY2026. FY2017 and FY2020 publish no order file, so those years are not covered.