Index to Diseases and Injuries

Nonunion

fracture — see Fracture, by site
joint, following fusion or arthrodesis M96.0
organ or site, congenital NEC — see Imperfect, closure
symphysis pubis, congenital Q74.2

Use the index to find a code, then confirm it in the Tabular List before assigning it. A code ending in a dash is incomplete, and a code in [brackets] is a manifestation code reported after the underlying condition. Search the whole index.

ICD-10-CM Index to Diseases and Injuries maintained by CDC/NCHS (public domain), from the CMS FY2027 release.