2027 ICD-10-CM Diagnosis Code M12.539Traumatic arthropathy, unspecified wrist
ICD-10-CM Codes›M00–M99›M05-M14›M12
- Billable — Valid for Submission
- Chronic Condition
M12.539 is a billable ICD-10-CM diagnosis code for traumatic arthropathy, unspecified wrist. It is valid on HIPAA claims for fiscal year 2027 (October 1, 2026 through September 30, 2027) and groups to MS-DRG 553 through 554. Coders also document this condition as traumatic arthropathy of distal radioulnar joint. In AHRQ's Clinical Classifications Software (CCSR), this diagnosis falls under Traumatic arthropathy.
Code Identity
Code Classification
Approximate SynonymsGuidance
Alternate terms and clinical phrases that map to this code.
- Traumatic arthropathy of distal radioulnar joint
- Traumatic arthropathy-wrist
Instructional NotesGuidance
Instructions from the official ICD-10-CM Tabular List that apply to M12.539: its own notes plus those printed at M12.5, M12, block M00-M25, and Chapter 13. A note printed at a category, block or chapter applies to every code under it.
Includes
Further defines, or gives examples of, the content of the category.
- Disorders affecting predominantly peripheral (limb) joints
Excludes1
Not coded here: the excluded code is never reported together with this one, unless the two conditions are unrelated.
- 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-)
Excludes2
Not included here: the excluded condition is not part of this code, but a patient may have both, so both codes may be reported.
- arthropathic psoriasis (L40.5-)
- certain conditions originating in the perinatal period (P04-P96)
- certain infectious and parasitic diseases (A00-B99)
- compartment syndrome (traumatic) (T79.A-)
- complications of pregnancy, childbirth and the puerperium (O00-O9A)
- congenital malformations, deformations, and chromosomal abnormalities (Q00-Q99)
- endocrine, nutritional and metabolic diseases (E00-E88)
- injury, poisoning and certain other consequences of external causes (S00-T88)
- neoplasms (C00-D49)
- symptoms, signs and abnormal clinical and laboratory findings, not elsewhere classified (R00-R94)
Notes
General instructions on how these codes are used.
- Use an external cause code following the code for the musculoskeletal condition, if applicable, to identify the cause of the musculoskeletal condition
Source: CMS ICD-10-CM Tabular List. How to read instructional notes.
Clinical ClassificationClinical
AHRQ’s CCSR groups this code into broader clinical categories.
Clinical InformationClinical
Traumatic Arthropathy
any arthropathy that is caused by trauma.
Patient EducationClinical
Wrist Injuries and Disorders
Your wrist connects your hand to your forearm. It is not one big joint; it has several small joints. This makes it flexible and allows you to move your hand in different ways. The wrist has two big forearm bones and eight small bones known as carpals. It also has tendons and ligaments, which are connective tissues.
The full article covers:
- What are the types of wrist injuries and disorders?
- Who is at risk for wrist injuries and disorders?
- What are the symptoms of wrist injuries and disorders?
- How are wrist injuries and disorders diagnosed?
- What are the treatments for wrist injuries and disorders?
- Can wrist injuries and disorders be prevented?
Read the full article at MedlinePlus
Courtesy of MedlinePlus, a service of the U.S. National Library of Medicine.
Convert M12.539 to ICD-9-CMHistory
The closest ICD-9-CM equivalents under the General Equivalence Mappings.
Code HistoryHistory
Questions About M12.539Overview
What is the ICD-10 code for traumatic arthropathy, unspecified wrist?
The ICD-10-CM code for traumatic arthropathy, unspecified wrist is M12.539 (sometimes written as M12539). It is billable on HIPAA-covered claims from October 1, 2026 through September 30, 2027.
Is M12.539 (Traumatic arthropathy, wrist) a billable code?
Yes. This is a billable ICD-10-CM code, specific enough to report traumatic arthropathy, unspecified wrist on HIPAA-covered claims from October 1, 2026 through September 30, 2027.
What MS-DRG does M12.539 group to?
When traumatic arthropathy, unspecified wrist is the principal diagnosis on an inpatient stay, it groups to MS-DRG 554, 553, with relative weights from 0.8328 to 1.2492 depending on complications. Higher weights mean higher Medicare reimbursement.
Can M12.539 be reported with a code from M19.1?
Not as a rule. The Excludes1 note at M12.5, which applies to M12.539, lists "post-traumatic osteoarthritis NOS (M19.1-)". An Excludes1 note means the excluded code is never reported together with this one; the only exception is when the two conditions are unrelated to each other (Official Guidelines, Section I.A.12.a).
What is the ICD-9 equivalent of M12.539?
Under the General Equivalence Mappings, traumatic arthropathy, unspecified wrist converts to ICD-9-CM 716.13 (traum arthropath-forearm). The mapping is approximate, so confirm the match fits the documentation.
