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8A81 Tension-type headache

International Classification of Diseases for Mortality and Morbidity Statistics, 11th Revision, v2024-01

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.

exclusions

• New daily-persistent headache  (8A83)

sections/codes in this section (8A81-8A81)

• Infrequent episodic tension-type headache  (8A81.0)
• Frequent episodic tension-type headache  (8A81.1)
• Chronic tension-type headache  (8A81.2)
• Other specified tension-type headache  (8A81.Y)
• Tension-type headache, unspecified  (8A81.Z)

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