ICD-10 Code G44.41 – Drug-induced headache, not elsewhere classified, intractable (2026): Diagnosis, Symptoms & Billing Guide
2026 ICD-10-CM Diagnosis Code G44.41 – Drug-induced headache, not elsewhere classified, intractable
What it is
This code identifies a headache caused by medication or another drug, when the headache is specifically documented as intractable. It applies when the condition is not classified elsewhere and the record supports a drug-related cause.
Clinical signs
Clinical features vary; refer to documentation. Typical records note persistent headache symptoms that continue despite usual management, along with a documented association to medication use or exposure.
When to use this code
Use this code when the provider clearly documents a drug-induced headache and states that it is intractable. It is appropriate when the headache is linked to a medication, adverse effect, or similar exposure, and no more specific code applies.
Check documentation for the causal drug and whether the headache is described as resistant to treatment. Do not assume causation from medication use alone.
Do not use for
Do not use this code for headaches without a documented drug cause or when the headache is not described as intractable. Avoid using it if another more specific headache diagnosis is recorded.
Coding tip
Confirm both elements in the note: drug-induced and intractable; if either is missing, check documentation before assigning G44.41.