ICD-10 Code for Ankylosis
Also indexed as (fibrous) (osseous) (joint)
The ICD-10-CM code for ankylosis is M24.60 — Ankylosis, unspecified joint. This is the code the Alphabetic Index gives for ankylosis with no further qualifier, valid for FY2027 (October 1, 2026 – September 30, 2027).
M24.60 is billable but unspecified. If the documentation names a type, site or cause, one of the more specific codes below is likely expected.
Which ankylosis code should you use?
The Alphabetic Index lists 16 codes under Ankylosis. Which one applies depends on the qualifier documented in the record — the type, site, cause, or associated condition. Find the qualifier below, then verify the code in the Tabular List before using it.
By type
| ankle | M24.67Not billable | Ankylosis, ankle and foot |
| arthrodesis status | Z98.1 | Arthrodesis status |
| cricoarytenoid | J38.7 | Other diseases of larynx |
| dental | K03.5 | Ankylosis of teeth |
| ear ossicles | H74.31Not billable | Ankylosis of ear ossicles |
| elbow | M24.62Not billable | Ankylosis, elbow |
| foot | M24.67Not billable | Ankylosis, ankle and foot |
| hand | M24.64Not billable | Ankylosis, hand |
| hip | M24.65Not billable | Ankylosis, hip |
| jaw | M26.61Not billable | Adhesions and ankylosis of temporomandibular joint |
| knee | M24.66Not billable | Ankylosis, knee |
| lumbosacral | M43.27 | Fusion of spine, lumbosacral region |
| postoperative | Z98.1 | Arthrodesis status |
| produced by surgical fusion, status | Z98.1 | Arthrodesis status |
| sacro-iliac | M43.28 | Fusion of spine, sacral and sacrococcygeal region |
| shoulder | M24.61Not billable | Ankylosis, shoulder |
| specified site NEC | M24.69 | Ankylosis, other specified joint |
| surgical | Z98.1 | Arthrodesis status |
| temporomandibular | M26.61Not billable | Adhesions and ankylosis of temporomandibular joint |
| tooth, teeth | K03.5 | Ankylosis of teeth |
| wrist | M24.63Not billable | Ankylosis, wrist |
Index terms and codes are reproduced from the official ICD-10-CM FY2027 release. The Alphabetic Index is a finding aid — a code must always be verified in the Tabular List before it is reported. Data sources