M63.88 — Disorders of muscle in diseases classified elsewhere, other site
Is M63.88 billable?
Yes — M63.88 is billable for FY2027. M63.88 is a valid, billable ICD-10-CM code at the highest level of specificity in its branch. M63.88 may be submitted for encounters from October 1, 2026 through September 30, 2027.
M63.88 at a glance
| Code | M63.88 |
|---|---|
| Description | Disorders of muscle in diseases classified elsewhere, other site |
| Billable | Yes |
| Code set | ICD-10-CM FY2027 |
| Valid for encounters | October 1, 2026 – September 30, 2027 |
What Medicare edits apply to M63.88?
The Medicare Code Editor screens inpatient claims before they are grouped. These edits name M63.88 directly.
This code describes a manifestation of an underlying disease. The underlying condition must be sequenced before it, so it can never be the principal or first-listed diagnosis.
Which MS-DRGs does M63.88 group to?
M63.88 sits in MDC 08 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.
- 557Tendonitis, Myositis and Bursitis with MCCmedical
- 558Tendonitis, Myositis and Bursitis without MCCmedical
How is M63.88 listed in the Alphabetic Index?
These are the routes through the Alphabetic Index that lead to M63.88. They show the wording a clinician may have documented, which often differs from the Tabular description.
- Leprosy › with muscle disorder › specified site NEC
- Schistosomiasis › with muscle disorder › specified site NEC
- Trichinellosis, trichiniasis, trichinelliasis, trichinosis › with muscle disorder › specified site NEC
Excludes1 — never code together — inherited from M60-M63
The conditions below can never be reported together with M63.88 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 M63
The conditions below can never be reported together with M63.88 on the same claim. An Excludes1 note means the two conditions cannot occur in the same patient, so reporting both is a coding error.
Code first — inherited from M63
The underlying condition below must be sequenced before M63.88. M63.88 describes a manifestation and cannot be the principal or first-listed diagnosis.
Excludes2 — not included here — inherited from Chapter 13
The conditions below are not part of M63.88, but a patient may have both at the same time. When documentation supports it, M63.88 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 M60-M63
The conditions below are not part of M63.88, but a patient may have both at the same time. When documentation supports it, M63.88 and the excluded code may both be reported.
- muscular dystrophies and myopathies (G71-G72)
How long has M63.88 existed?
M63.88 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.
What other codes are in the M63.8 family? (9)
- M63.80Disorders of muscle in diseases classified elsewhere, unspecified site
- M63.81Disorders of muscle in diseases classified elsewhere, shouldernot billable
- M63.82Disorders of muscle in diseases classified elsewhere, upper armnot billable
- M63.83Disorders of muscle in diseases classified elsewhere, forearmnot billable
- M63.84Disorders of muscle in diseases classified elsewhere, handnot billable
- M63.85Disorders of muscle in diseases classified elsewhere, thighnot billable
- M63.86Disorders of muscle in diseases classified elsewhere, lower legnot billable
- M63.87Disorders of muscle in diseases classified elsewhere, ankle and footnot billable
- M63.89Disorders of muscle in diseases classified elsewhere, multiple sites