ICD-11 classes
08 Diseases of the nervous system
Headache disorders
8A81 — Tension-type headache

ICD-11 8A81 — Tension-type headache

A primary and highly prevalent headache disorder, in most cases episodic. Attacks of highly variable frequency and duration are characterised by mild-to-moderate headache without associated symptoms, although pericranial tenderness may be present. In a minority of cases the disorder evolves, with increasingly frequent headache and sometimes loss of episodicity.

The diagnosis includes nothing.

Diagnosis with code 8A81 contains 5 clarifying diagnoses:

1. 8A81.0 — Infrequent episodic tension-type headache
2. 8A81.1 — Frequent episodic tension-type headache
3. 8A81.2 — Chronic tension-type headache
4. 8A81.Y — Other specified tension-type headache
5. 8A81.Z — Tension-type headache, unspecified