ICD-10-CM > G00-G99 > G40-G47 > G44 > G44.3 > G44.32 G44.32 Chronic post-traumatic headache Non-Billable/Non-Specific Codes G44.321Chronic post-traumatic headache, intractableG44.329Chronic post-traumatic headache, not intractable
ICD-10 Fast ICD-10 Fast