ICD-10 Code G44.20 – Tension-type headache, unspecified (2026): Diagnosis, Symptoms & Billing Guide
2026 ICD-10-CM Diagnosis Code G44.20 – Tension-type headache, unspecified
What it is
G44.20 identifies a tension-type headache when the type is documented but not further specified. It usually refers to a primary headache disorder with a pressing or tightening pain pattern.
Clinical signs
Clinical features vary; refer to documentation. Commonly, you may see bilateral head pain, mild to moderate intensity, and no prominent nausea or neurologic deficits.
When to use this code
Use G44.20 when the provider documents tension-type headache but does not specify episodic, chronic, or another subtype. It also fits when the note supports this diagnosis, yet details needed for a more specific code are missing.
Do not use for
Do not use this code for migraine, cluster headache, or headache due to another condition. If the chart identifies a more specific tension-type headache subtype, code that instead.
Coding tip
Check the assessment and problem list for subtype wording before assigning the unspecified code.