M21.529 — Acquired clubhand, unspecified hand
Is M21.529 billable?
Yes, but M21.529 is an unspecified code. M21.529 is a valid, billable ICD-10-CM code for encounters from October 1, 2026 through September 30, 2027. However, M21.529 is an unspecified or catch-all code. Payers apply additional scrutiny to unspecified codes and many deny them when the medical record supports a more specific option, so check the documentation before selecting M21.529 — the more specific alternatives are listed below.
More specific alternatives
M21.529 at a glance
| Code | M21.529 |
|---|---|
| Description | Acquired clubhand, unspecified hand |
| Billable | Yes |
| Code set | ICD-10-CM FY2027 |
| Valid for encounters | October 1, 2026 – September 30, 2027 |
Which MS-DRGs does M21.529 group to?
M21.529 sits in MDC 01 and helps define the logic of 2 MS-DRGs (version 44, FY2027). Which one a stay actually groups to also depends on procedures and secondary diagnoses.
- 073Cranial and Peripheral Nerve Disorders with MCCmedical
- 074Cranial and Peripheral Nerve Disorders without MCCmedical
How is M21.529 listed in the Alphabetic Index?
The Alphabetic Index lists these routes under M21.52, the nearest indexed parent of M21.529. Use them to find the family, then select the specific code.
- Deformity › limb › clubhand
Excludes1 — never code together — inherited from M21
The conditions below can never be reported together with M21.529 on the same claim. An Excludes1 note means the two conditions cannot occur in the same patient, so reporting both is a coding error.
Excludes1 — never code together — inherited from M21.5
The conditions below can never be reported together with M21.529 on the same claim. An Excludes1 note means the two conditions cannot occur in the same patient, so reporting both is a coding error.
- clubfoot, not specified as acquired (Q66.89)
Excludes2 — not included here — inherited from Chapter 13
The conditions below are not part of M21.529, but a patient may have both at the same time. When documentation supports it, M21.529 and the excluded code may both 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)
Excludes2 — not included here — inherited from M20-M25
The conditions below are not part of M21.529, but a patient may have both at the same time. When documentation supports it, M21.529 and the excluded code may both be reported.
- joints of the spine (M40-M54)
Excludes2 — not included here — inherited from M21
The conditions below are not part of M21.529, but a patient may have both at the same time. When documentation supports it, M21.529 and the excluded code may both be reported.
How long has M21.529 existed?
M21.529 has been in ICD-10-CM since at least FY2016, the earliest fiscal year on record here.
Derived from the official order files for FY2016–FY2026. FY2017 and FY2020 publish no order file, so those years are not covered.