Shrt lst unil nerlgif hdache w cnjnct inject/tear, not ntrct

This code identifies a rare, primary headache disorder characterized by very short-lasting, severe, unilateral pain, typically in the orbital, periorbital, or temporal region. It is always accompanied by prominent ipsilateral autonomic symptoms, specifically conjunctival injection (red eye) and lacrimation (tearing), without being refractory to standard treatment.

Use this code for patients diagnosed with SUNCT syndrome where the headache episodes are effectively managed with medication and do not present significant challenges in treatment. Documentation should clearly state the diagnosis of SUNCT, the presence of conjunctival injection and tearing, and explicitly note that the condition is "not intractable" or "responsive to treatment."

• Ensure documentation specifies "not intractable" to differentiate from the intractable variant.
• Distinguish from other trigeminal autonomic cephalalgias (TACs) like paroxysmal hemicrania or cluster headache, which have different durations and autonomic features.
• Confirm the presence of both conjunctival injection and tearing, as these are defining characteristics of SUNCT.