M91.22 — Coxa plana, left hip
Is M91.22 billable?
Yes — M91.22 is billable for FY2027. M91.22 is a valid, billable ICD-10-CM code at the highest level of specificity in its branch. M91.22 may be submitted for encounters from October 1, 2026 through September 30, 2027.
M91.22 at a glance
| Code | M91.22 |
|---|---|
| Description | Coxa plana, left hip |
| Billable | Yes |
| Code set | ICD-10-CM FY2027 |
| Valid for encounters | October 1, 2026 – September 30, 2027 |
Which MS-DRGs does M91.22 group to?
M91.22 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.
- 553Bone Diseases and Arthropathies with MCCmedical
- 554Bone Diseases and Arthropathies without MCCmedical
How is M91.22 listed in the Alphabetic Index?
The Alphabetic Index lists these routes under M91.2, the nearest indexed parent of M91.22. Use them to find the family, then select the specific code.
- Coxa › plana
Excludes1 — never code together — inherited from M91-M94
The conditions below can never be reported together with M91.22 on the same claim. An Excludes1 note means the two conditions cannot occur in the same patient, so reporting both is a coding error.
- postprocedural chondropathies (M96.-)
Excludes1 — never code together — inherited from M91
The conditions below can never be reported together with M91.22 on the same claim. An Excludes1 note means the two conditions cannot occur in the same patient, so reporting both is a coding error.
- slipped upper femoral epiphysis (nontraumatic) (M93.0-)
Excludes2 — not included here — inherited from Chapter 13
The conditions below are not part of M91.22, but a patient may have both at the same time. When documentation supports it, M91.22 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)
How long has M91.22 existed?
M91.22 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.