G44.3 Post-traumatic headacheNon-billable header with 3 child codes.
G44.30 Post-traumatic headache, unspecifiedG44.31 Acute post-traumatic headacheG44.32 Chronic post-traumatic headacheF07.81 Postconcussional syndrome ("code to identify associated post-traumatic headache, if applicable (G44.3-)")G44.1 Vascular headache, not elsewhere classified ("post-traumatic headache (G44.3-)")G43 Migraine ("headache syndromes (G44.-)")G89 Pain, not elsewhere classified ("headache syndromes (G44.-)")R51 Headache ("migraine and other headache syndromes (G43-G44)")G44.211 Episodic tension-type headache, intractableG44.219 Episodic tension-type headache, not intractableG44.22 Chronic tension-type headacheG44.221 Chronic tension-type headache, intractableG44.229 Chronic tension-type headache, not intractableG44.3 Post-traumatic headache (this code)G44.30 Post-traumatic headache, unspecifiedG44.301 Post-traumatic headache, unspecified, intractableG44.309 Post-traumatic headache, unspecified, not intractableG44.31 Acute post-traumatic headacheG44.311 Acute post-traumatic headache, intractable