G44.321 Chronic post-traumatic headache, intractable

The following code(s) above G44.321 may contain annotation back-references that may be applicable to G44.321:

• Diseases of the nervous system (G00-G99)
• Chronic post-traumatic headache (G44.32)

Diagnosis Index

Headache R51.9
- Post-traumatic G44.309
-- Chronic G44.329
--- Intractable G44.321