M87.864 — Other osteonecrosis, right fibula
Is M87.864 billable?
Yes — M87.864 is billable for FY2027. M87.864 is a valid, billable ICD-10-CM code at the highest level of specificity in its branch. M87.864 may be submitted for encounters from October 1, 2026 through September 30, 2027.
M87.864 at a glance
| Code | M87.864 |
|---|---|
| Description | Other osteonecrosis, right fibula |
| Billable | Yes |
| Code set | ICD-10-CM FY2027 |
| Valid for encounters | October 1, 2026 – September 30, 2027 |
Which MS-DRGs does M87.864 group to?
M87.864 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
As a secondary diagnosis, M87.864 is a complication or comorbidity (CC), which can move a stay into a higher-paying DRG.
How is M87.864 listed in the Alphabetic Index?
The Alphabetic Index lists these routes under M87.86, the nearest indexed parent of M87.864. Use them to find the family, then select the specific code.
- Osteonecrosis › specified type NEC › fibula
- Osteonecrosis › specified type NEC › tibia
Excludes1 — never code together — inherited from M86-M90
The conditions below can never be reported together with M87.864 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 osteopathies (M96.-)
Excludes1 — never code together — inherited from M87
The conditions below can never be reported together with M87.864 on the same claim. An Excludes1 note means the two conditions cannot occur in the same patient, so reporting both is a coding error.
Use additional code — inherited from M87
Report an additional code alongside M87.864 to fully describe the condition. M87.864 is sequenced first.
- code to identify major osseous defect, if applicable (M89.7-)
Excludes2 — not included here — inherited from Chapter 13
The conditions below are not part of M87.864, but a patient may have both at the same time. When documentation supports it, M87.864 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 M87.864 existed?
M87.864 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.