MG30.6Z Chronic secondary headache or orofacial pain, unspecified
International Classification of Diseases for Mortality and Morbidity Statistics, 11th Revision, v2020-09
If the aetiology is vague, consider using codes in the section of chronic primary pain.
Add Stem and/or Extension codes to form a cluster code which adds detail to the condition.
Has causing condition - multiple selections are allowed