M86.8X80 — Other osteomyelitis, skull
Is M86.8X80 billable?
Yes — M86.8X80 is billable for FY2027. M86.8X80 is a valid, billable ICD-10-CM code at the highest level of specificity in its branch. M86.8X80 may be submitted for encounters from October 1, 2026 through September 30, 2027. M86.8X80 is new in FY2027.
M86.8X80 at a glance
| Code | M86.8X80 |
|---|---|
| Description | Other osteomyelitis, skull |
| Billable | Yes |
| Code set | ICD-10-CM FY2027 |
| Valid for encounters | October 1, 2026 – September 30, 2027 |
| FY2027 change | New in FY2027 |
Which MS-DRGs does M86.8X80 group to?
M86.8X80 sits in MDC 08 and helps define the logic of 3 MS-DRGs (version 44, FY2027). Which one a stay actually groups to also depends on procedures and secondary diagnoses.
- 456Spinal Fusion Except Cervical with Spinal Curvature, Malignancy, or Infection with MCCsurgical
- 457Spinal Fusion Except Cervical with Spinal Curvature, Malignancy, or Infection with CCsurgical
- 458Spinal Fusion Except Cervical with Spinal Curvature, Malignancy, or Infection without CC/MCCsurgical
As a secondary diagnosis, M86.8X80 is a complication or comorbidity (CC), which can move a stay into a higher-paying DRG.
How is M86.8X80 listed in the Alphabetic Index?
The Alphabetic Index lists these routes under M86.8X8, the nearest indexed parent of M86.8X80. Use them to find the family, then select the specific code.
- Pott's › tumor, puffy
- Tumor › Pott's puffy
Excludes1 — never code together — inherited from M86-M90
The conditions below can never be reported together with M86.8X80 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 M86.8X80 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 M86.8X80 to fully describe the condition. M86.8X80 is sequenced first.
Excludes2 — not included here — inherited from Chapter 13
The conditions below are not part of M86.8X80, but a patient may have both at the same time. When documentation supports it, M86.8X80 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 M86.8X80, but a patient may have both at the same time. When documentation supports it, M86.8X80 and the excluded code may both be reported.