M24.649 – Ankylosis, unspecified hand

ICD-10-CM 2027 diagnosis code · Other joint disorders

Billable code

ICD-10-CM code M24.649
Code
M24.649 (claims format: M24649)
Description
Ankylosis, unspecified hand
Billable
Yes – valid for HIPAA-covered transactions
Valid for
Dates of service October 1, 2026 – September 30, 2027 (FY2027)
Chapter
13. Diseases of the musculoskeletal system and connective tissue (M00-M99)
Block
M20-M25 Other joint disorders
Parent codes
M24 › M24.6 › M24.64

Notes inherited from parent codes

Instructional notes at a category or block level apply to every code below it.

M24 – Other specific joint derangements

Excludes1 (not coded here):
  • current injury - see injury of joint by body region
Excludes2 (not included here):
  • ganglion (M67.4)
  • snapping knee (M23.8-)
  • temporomandibular joint disorders (M26.6-)

M24.6 – Ankylosis of joint

Excludes1 (not coded here):
  • stiffness of joint without ankylosis (M25.6-)
Excludes2 (not included here):

Block M20-M25

Excludes2 (not included here):

Related codes in M24.64

Frequently asked questions

What is ICD-10 code M24.649?

M24.649 is the ICD-10-CM code for ankylosis, unspecified hand, in the block M20-M25 (Other joint disorders).

Is M24.649 a billable code?

Yes. M24.649 is a billable/specific code that can be used to indicate a diagnosis for reimbursement purposes.

What category does M24.649 belong to?

It belongs to category M24 – Other specific joint derangements.

Source: CDC/NCHS ICD-10-CM FY2027 code files, tabular list and index. Reference only – code assignment must follow the official ICD-10-CM guidelines and documentation in the medical record.