M18.30 – Unilateral post-traumatic osteoarthritis of first carpometacarpal joint, unspecified hand
ICD-10-CM 2027 diagnosis code · Osteoarthritis
ICD-10-CM code
M18.30
- Code
M18.30(claims format:M1830)- Description
- Unilateral post-traumatic osteoarthritis of first carpometacarpal joint, unspecified hand
- Short description
- Unil post-trauma osteoarth of 1st carpometacarp jt,unsp 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
- M15-M19 Osteoarthritis
- Parent codes
- M18 › M18.3
Notes inherited from parent codes
Instructional notes at a category or block level apply to every code below it.
M18.3 – Unilateral post-traumatic osteoarthritis of first carpometacarpal joint
Applicable to:
- Post-traumatic osteoarthritis of first carpometacarpal joint NOS
Block M15-M19
Excludes2 (not included here):
- osteoarthritis of spine (M47.-)
Related codes in M18.3
Frequently asked questions
What is ICD-10 code M18.30?
M18.30 is the ICD-10-CM code for unilateral post-traumatic osteoarthritis of first carpometacarpal joint, unspecified hand, in the block M15-M19 (Osteoarthritis).
Is M18.30 a billable code?
Yes. M18.30 is a billable/specific code that can be used to indicate a diagnosis for reimbursement purposes.
What category does M18.30 belong to?
It belongs to category M18 – Osteoarthritis of first carpometacarpal joint.
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.