M12.542 – Traumatic arthropathy, left hand

ICD-10-CM 2027 diagnosis code · Inflammatory polyarthropathies

Billable code

ICD-10-CM code M12.542

Code: M12.542 (claims format: M12542)
Description: Traumatic arthropathy, left 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: M05-M14 Inflammatory polyarthropathies
Parent codes: M12 › M12.5 › M12.54

Notes inherited from parent codes

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

M12 – Other and unspecified arthropathy

Excludes1 (not coded here):

arthrosis (M15-M19)
cricoarytenoid arthropathy (J38.7)

M12.5 – Traumatic arthropathy

Excludes1 (not coded here):

current injury-see Alphabetic Index
post-traumatic osteoarthritis of first carpometacarpal joint (M18.2-M18.3)
post-traumatic osteoarthritis of hip (M16.4-M16.5)
post-traumatic osteoarthritis of knee (M17.2-M17.3)
post-traumatic osteoarthritis NOS (M19.1-)
post-traumatic osteoarthritis of other single joints (M19.1-)

Related codes in M12.54

M12.541 – Traumatic arthropathy, right handBillable
M12.549 – Traumatic arthropathy, unspecified handBillable

Frequently asked questions

What is ICD-10 code M12.542?

M12.542 is the ICD-10-CM code for traumatic arthropathy, left hand, in the block M05-M14 (Inflammatory polyarthropathies).

Is M12.542 a billable code?

Yes. M12.542 is a billable/specific code that can be used to indicate a diagnosis for reimbursement purposes.

What category does M12.542 belong to?

It belongs to category M12 – Other and unspecified arthropathy.

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.