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049 Chronic paroxysmal hemicrania, not intractable

Chronic paroxysmal hemicrania NOS

G44.05 Short lasting unilateral neuralgiform headache with conjunctival injection and tearing (SUNCT)

G44.051 Short lasting unilateral neuralgiform headache with conjunctival injection and tearing (SUNCT), intractable

G44.059 Short lasting unilateral neuralgiform headache with conjunctival injection and tearing (SUNCT), not intractable

Short lasting unilateral neuralgiform headache with conjunctival injection and tearing (SUNCT) NOS

G44.09 Other trigeminal autonomic cephalgias (TAC)

G44.091 Other trigeminal autonomic cephalgias (TAC), intractable

G44.099 Other trigeminal autonomic cephalgias (TAC), not intractable

G44.1 Vascular headache, not elsewhere classified

G44.10 Vascular headache, not elsewhere classified, not intractable

Vascular headache NOS

G44.11 Vascular headache, not elsewhere classified, intractable

G44.2 Tension-type headache

G44.20 Tension-type headache, unspecified

G44.201 Tension-type headache, unspecified, intractable

G44.209 Tension-type headache, unspecified, not intractable

Tension headache NOS

G44.21 Episodic tension-type headache

G44.211 Episodic tension-type headache, intractable

G44.219 Episodic tension-type headache, not intractable

Episodic tension-type headache NOS

G44.22 Chronic tension-type headache

G44.221 Chronic tension-type headache, intractable

G44.229 Chronic tension-type headache, not intractable

Chronic tension-type headache NOS

G44.3 Post-traumatic headache

Code first: postconcussional syndrome (F07.81)

G44.30 Post-traumatic headache, unspecified

G44.301 Post-traumatic headache, unspecified, intractable

G44.