ICD-10 Code G43.821 – Menstrual migraine, not intractable, with status migrainosus (2026): Diagnosis, Symptoms & Billing Guide
2026 ICD-10-CM Diagnosis Code G43.821 – Menstrual migraine, not intractable, with status migrainosus
What it is
This code identifies a migraine linked to menstruation that is not intractable and has progressed to status migrainosus. Use it when the record clearly links the migraine episode to the menstrual cycle.
Clinical signs
Clinical features vary; refer to documentation. Status migrainosus generally means a severe migraine attack that lasts longer than usual and is difficult to break, with the menstrual association documented.
When to use this code
Use this code when the provider documents menstrual migraine and also states status migrainosus. The record should show the headache is not intractable and is tied to menses or the menstrual period. If the menstrual link is not documented, check documentation before assigning this code.
Do not use for
Do not use this code for migraine without menstrual association, or when status migrainosus is not documented. Do not use it if the chart says intractable migraine or provides insufficient detail.
Coding tip
Always verify both elements: menstrual migraine and status migrainosus; if either is missing, check documentation before coding.