Billing Status: YES. This is a valid, specific, and billable ICD-10-CM reference.

Inpatient Payment Groups (MS-DRG)

MS-DRGs this diagnosis helps define, as principal or secondary, per the CMS ICD-10-CM/PCS MS-DRG Definitions Manual v43.0 (FY2026), Appendix B.

MS-DRG 456 — SPINAL FUSION EXCEPT CERVICAL WITH SPINAL CURVATURE, MALIGNANCY, INFECTION OR EXTENSIVE FUSIONS WITH MCC (MDC 08)
MS-DRG 457 — SPINAL FUSION EXCEPT CERVICAL WITH SPINAL CURVATURE, MALIGNANCY, INFECTION OR EXTENSIVE FUSIONS WITH CC (MDC 08)
MS-DRG 458 — SPINAL FUSION EXCEPT CERVICAL WITH SPINAL CURVATURE, MALIGNANCY, INFECTION OR EXTENSIVE FUSIONS WITHOUT CC/MCC (MDC 08)
MS-DRG 539 — OSTEOMYELITIS WITH MCC (MDC 08)
MS-DRG 540 — OSTEOMYELITIS WITH CC (MDC 08)
MS-DRG 541 — OSTEOMYELITIS WITHOUT CC/MCC (MDC 08)

A diagnosis appearing in a group's logic does not by itself determine the DRG assigned to a stay; the grouper uses the full claim.

Risk Adjustment (CMS-HCC)

Payment categories this diagnosis maps to under CMS-HCC V28, payment year 2026.

Other models: CMS-HCC V22 HCC 39

Risk scores depend on the enrollee's full accepted diagnosis set and segment; a category mapping alone does not determine payment.

Code Set: Valid FY2026 and FY2027. FY2026 took effect October 1, 2025.

Other osteomyelitis, other site is a billable ICD-10-CM diagnosis code (M86.8X8).

Sequencing, inclusion, and exclusion notes published for M86.8X8 in the official ICD-10-CM tabular list.

Conditions that can never be reported with this code; the two are mutually exclusive.

Conditions not covered by this code, but which may be reported alongside it when both are present.

Supplementary codes the tabular list directs you to add.

Official ICD-10-CM classifications closest to M86.8X8 in its code family, with their registry titles.