ICD-10-CM 2027
ICD-10 code for ankylosis
From the official ICD-10-CM alphabetic index entry “Ankylosis (fibrous) (osseous) (joint)”. Page updated September 29, 2026.
About coding ankylosis
The ICD-10-CM code for ankylosis is M24.60 (Ankylosis, unspecified joint). The official index lists 21 more specific codes, so check the documentation for details such as type, cause, site or severity before settling on M24.60.
Within M24.6, choose M24.60 (unspecified joint) only when documentation doesn't support a more specific option: shoulder (M24.61), elbow (M24.62), wrist (M24.63), hand (M24.64), hip (M24.65), knee (M24.66), ankle and foot (M24.67) and other specified joint (M24.69).
It is not a CC or MCC, so as a secondary diagnosis it doesn't change the MS-DRG severity level.
In MS-DRG v44.0, it is part of the grouping logic for DRG 553 (Bone Diseases and Arthropathies with MCC, relative weight 1.2494) and DRG 554 (Bone Diseases and Arthropathies without MCC, relative weight 0.8331), in MDC 08 (Diseases and Disorders of the Musculoskeletal System and Connective Tissue), as a principal or secondary diagnosis. The DRG a claim lands in depends on the principal diagnosis, procedures and any CC/MCC secondary diagnoses.
More specific ankylosis codes (official index)
- ankle M24.67 — Ankylosis, ankle and foot
- arthrodesis status Z98.1 — Arthrodesis status
- cricoarytenoid (cartilage) (joint) (larynx) J38.7 — Other diseases of larynx
- dental K03.5 — Ankylosis of teeth
- ear ossicles H74.31 — Ankylosis of ear ossicles
- elbow M24.62 — Ankylosis, elbow
- foot M24.67 — Ankylosis, ankle and foot
- hand M24.64 — Ankylosis, hand
- hip M24.65 — Ankylosis, hip
- incostapedial joint (infectional)
- jaw (temporomandibular) M26.61 — Adhesions and ankylosis of temporomandibular joint
- knee M24.66 — Ankylosis, knee
- lumbosacral (joint) M43.27 — Fusion of spine, lumbosacral region
- postoperative (status) Z98.1 — Arthrodesis status
- produced by surgical fusion, status Z98.1 — Arthrodesis status
- sacro-iliac (joint) M43.28 — Fusion of spine, sacral and sacrococcygeal region
- shoulder M24.61 — Ankylosis, shoulder
- specified site NEC M24.69 — Ankylosis, other specified joint
- spine (joint)
- spondylitic
- surgical Z98.1 — Arthrodesis status
- temporomandibular M26.61 — Adhesions and ankylosis of temporomandibular joint
- tooth, teeth (hard tissues) K03.5 — Ankylosis of teeth
- wrist M24.63 — Ankylosis, wrist
Common questions about ankylosis ICD-10 codes
What is the ICD-10 code for ankylosis?
- M24.60 — Ankylosis, unspecified joint. More specific codes apply when the documentation supports them: M24.67, Z98.1, J38.7, K03.5 and others below.
What is the ICD-10 code for ankle ankylosis?
- M24.67 — Ankylosis, ankle and foot (header code; choose a more specific subcode).
What is the ICD-10 code for arthrodesis status ankylosis?
- Z98.1 — Arthrodesis status.
What is the ICD-10 code for cricoarytenoid ankylosis?
- J38.7 — Other diseases of larynx.
What is the ICD-10 code for dental ankylosis?
- K03.5 — Ankylosis of teeth.
What is the ICD-10 code for ear ossicles ankylosis?
- H74.31 — Ankylosis of ear ossicles (header code; choose a more specific subcode).
What is the ICD-10 code for elbow ankylosis?
- M24.62 — Ankylosis, elbow (header code; choose a more specific subcode).
Is M24.60 billable?
- Yes. M24.60 is a billable/specific ICD-10-CM code valid for FY2027 (October 1, 2026 – September 30, 2027).
Can M24.60 be used as a principal diagnosis?
- Yes. The Medicare Code Editor doesn't restrict M24.60 as a principal diagnosis.
Is M24.60 a CC or MCC?
- No. M24.60 is neither a CC nor an MCC under MS-DRG v44.0.