Primary exertional headache

This code represents a headache disorder specifically triggered by and occurring during or immediately after sustained physical exertion. It is characterized by a throbbing or pulsating pain, often bilateral, that typically resolves within a few hours. This diagnosis implies no underlying structural or vascular pathology.

Apply this code when documentation clearly indicates a headache directly precipitated by physical activity, such as running, weightlifting, or sexual intercourse, and where secondary causes have been ruled out. The physician's notes should specify the exertional trigger and confirm the primary nature of the headache.

• Ensure documentation explicitly states "primary" exertional headache to differentiate from secondary causes.
• Do not use this code if the headache is a symptom of another condition, such as subarachnoid hemorrhage or cerebral venous thrombosis.
• Consider sequencing this code as the primary diagnosis if it is the reason for the encounter, or as a secondary diagnosis if managed alongside another condition.