ICDcodes.org
FY2027

M86.8X8 — Other osteomyelitis, other site

Not billableSubdivided FY2027

Can I still bill M86.8X8?

No — M86.8X8 stopped being billable on October 1, 2026. M86.8X8 still exists in ICD-10-CM but was subdivided for FY2027 and became a non-billable header code. Because M86.8X8 still appears in a code lookup, this change is easy to miss — but submitting it on or after October 1, 2026 will be denied for lack of specificity. Use one of the more specific codes below instead.

M86.8X8 at a glance

CodeM86.8X8
DescriptionOther osteomyelitis, other site
BillableNo — header code
Code setICD-10-CM FY2027
Valid for encountersOctober 1, 2026 – September 30, 2027
FY2027 changeSubdivided in FY2027 — no longer billable

How is M86.8X8 listed in the Alphabetic Index?

These are the routes through the Alphabetic Index that lead to M86.8X8. They show the wording a clinician may have documented, which often differs from the Tabular description.

  • 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 M86.8X8 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 M86.8X8 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 M86.8X8 to fully describe the condition. M86.8X8 is sequenced first.

  • code (B95-B97) to identify infectious agent
  • 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 M86.8X8, but a patient may have both at the same time. When documentation supports it, M86.8X8 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 M86.8X8, but a patient may have both at the same time. When documentation supports it, M86.8X8 and the excluded code may both be reported.

What codes fall under M86.8X8? (3)

How long has M86.8X8 existed?

M86.8X8 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 M86.8X family? (9)