M86.662 — Other chronic osteomyelitis, left tibia and fibula
Is M86.662 billable?
Yes — M86.662 is billable for FY2027. M86.662 is a valid, billable ICD-10-CM code at the highest level of specificity in its branch. M86.662 may be submitted for encounters from October 1, 2026 through September 30, 2027.
M86.662 at a glance
| Code | M86.662 |
|---|---|
| Description | Other chronic osteomyelitis, left tibia and fibula |
| Billable | Yes |
| Code set | ICD-10-CM FY2027 |
| Valid for encounters | October 1, 2026 – September 30, 2027 |
Which MS-DRGs does M86.662 group to?
M86.662 sits in MDC 08 and helps define the logic of 1 MS-DRG (version 44, FY2027). Which one a stay actually groups to also depends on procedures and secondary diagnoses.
- 400Knee Procedures with Principal Diagnosis of Infectionsurgical
As a secondary diagnosis, M86.662 is a complication or comorbidity (CC), which can move a stay into a higher-paying DRG.
How is M86.662 listed in the Alphabetic Index?
The Alphabetic Index lists these routes under M86.66, the nearest indexed parent of M86.662. Use them to find the family, then select the specific code.
- Osteomyelitis › chronic › fibula (general) (infective) (localized) (neonatal) (purulent) (septic) (staphylococcal) (streptococcal) (suppurative) (with periostitis)
- Osteomyelitis › chronic › tibia (general) (infective) (localized) (neonatal) (purulent) (septic) (staphylococcal) (streptococcal) (suppurative) (with periostitis)
Excludes1 — never code together — inherited from M86-M90
The conditions below can never be reported together with M86.662 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 M86
The conditions below can never be reported together with M86.662 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 M86
Report an additional code alongside M86.662 to fully describe the condition. M86.662 is sequenced first.
Excludes2 — not included here — inherited from Chapter 13
The conditions below are not part of M86.662, but a patient may have both at the same time. When documentation supports it, M86.662 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 M86
The conditions below are not part of M86.662, but a patient may have both at the same time. When documentation supports it, M86.662 and the excluded code may both be reported.
How long has M86.662 existed?
M86.662 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.