Common ICD-9 Codes

[and aetiological ICD-10 code for secondary headache disorders] ... 11.2.1 [G44.841] Cervicogenic headache [M99] 11.2.2 [G44.842] Headache attributed to retropharyngeal tendonitis [M79.8] 11.2.3 [G44.841] Headache attributed to craniocervical dystonia [G24] 11.3 [G44.843] Headache attributed to disorder of eyes 11.3.1 [G44.843] Headache ... ................
................