2026 ICD-10-CM Diagnosis Code M86.68Other chronic osteomyelitis, other site

ICD-10-CM Codes›M00–M99›M86-M90›M86

ICD-10-CM M86.68
CMSSource: CMS FY 2026 ICD-10-CM dataset · Effective Oct 1, 2025 – Sep 30, 2026

M86.68 is a billable ICD-10-CM diagnosis code for other chronic osteomyelitis, other site. It is valid on HIPAA claims for fiscal year 2026 (October 1, 2025 through September 30, 2026) and groups to MS-DRG 456 through 458, 539 through 541. In AHRQ's Clinical Classifications Software (CCSR), this diagnosis falls under Osteomyelitis.

Code Identity

ICD-10-CM Code
M86.68
Billable Status
Yes — Valid for Submission
Code Describes
Other chronic osteomyelitis, other site
Short Description
Other chronic osteomyelitis, other site
Same as the full description in the CMS dataset.
Parent Code
M86.6
Other chronic osteomyelitis

Code Classification

ChapterM00–M99Diseases of the musculoskeletal system and connective tissue
SectionM86-M90Other osteopathies
CategoryM86Osteomyelitis
This CodeM86.68Other chronic osteomyelitis, other site

Approximate SynonymsGuidance

Alternate terms and clinical phrases that map to this code.

  • Chronic osteitis of jaw
  • Chronic osteomyelitis of cranium
  • Chronic osteomyelitis of facial bone
  • Chronic osteomyelitis of femur
  • Chronic osteomyelitis of frontal bone
  • Chronic osteomyelitis of hip
  • Chronic osteomyelitis of jaw
  • Chronic osteomyelitis of left pelvis
  • Chronic osteomyelitis of mandible
  • Chronic osteomyelitis of maxilla
  • Chronic osteomyelitis of pelvis
  • Chronic osteomyelitis of pelvis and femur
  • Chronic osteomyelitis of right pelvis
  • Chronic osteomyelitis of sphenoid bone
  • Chronic osteomyelitis of temporal bone
  • Chronic osteomyelitis of zygomatic bone
  • Chronic sclerosing nonsuppurative osteomyelitis
  • Chronic sclerosing nonsuppurative osteomyelitis of facial bone
  • Chronic sclerosing nonsuppurative osteomyelitis of frontal bone
  • Chronic sclerosing nonsuppurative osteomyelitis of mandible
  • Chronic sclerosing nonsuppurative osteomyelitis of maxilla
  • Chronic sclerosing nonsuppurative osteomyelitis of sphenoid bone
  • Chronic sclerosing nonsuppurative osteomyelitis of temporal bone
  • Chronic sclerosing nonsuppurative osteomyelitis of zygomatic bone
  • Infection of bone of pelvis and femur
  • Osteitis of left half of pelvis
  • Osteitis of right half of pelvis
  • Osteomyelitis of frontal bone
  • Osteomyelitis of hip region
  • Osteomyelitis of left pelvis
  • Osteomyelitis of mandible
  • Osteomyelitis of maxilla
  • Osteomyelitis of right pelvis
  • Osteomyelitis of sphenoid bone
  • Osteomyelitis of temporal bone
  • Sequestrum of bilateral temporal bones
  • Sequestrum of bone of skull
  • Sequestrum of facial bones
  • Sequestrum of left half of sphenoid bone
  • Sequestrum of left temporal bone
  • Sequestrum of nasal-orbit complex
  • Sequestrum of right half of sphenoid bone
  • Sequestrum of right temporal bone
  • Sequestrum of the frontal bone
  • Sequestrum of the sphenoid bone
  • Sequestrum of the temporal bone
  • Sequestrum of the zygomatic bone

Index to Diseases and InjuriesGuidance

Alphabetical index entries that point to this code.

External Cause of Injuries IndexGuidance

References for this code in the External Cause of Injuries Index.

    • Osteomyelitis(general) (infective) (localized) (neonatal) (purulent) (septic) (staphylococcal) (streptococcal) (suppurative) (with periostitis)
      • chronic (or old)
        • neck
    • Osteomyelitis(general) (infective) (localized) (neonatal) (purulent) (septic) (staphylococcal) (streptococcal) (suppurative) (with periostitis)
      • chronic (or old)
        • rib
    • Osteomyelitis(general) (infective) (localized) (neonatal) (purulent) (septic) (staphylococcal) (streptococcal) (suppurative) (with periostitis)
      • chronic (or old)
        • skull

Clinical ClassificationClinical

AHRQ’s CCSR groups this code into broader clinical categories.

CCSR MUS002
Osteomyelitis
Default principal diagnosis: inpatient Yes · outpatient Yes

Patient EducationClinical

Bone Infections

Like other parts of the body, bones can get infected. The infections are usually bacterial, but can also be fungal. They may spread to the bone from nearby skin or muscles, or from another part of the body through the bloodstream.

Read the full article at MedlinePlus

Courtesy of MedlinePlus, a service of the U.S. National Library of Medicine.

Convert M86.68 to ICD-9-CMHistory

The closest ICD-9-CM equivalents under the General Equivalence Mappings.

ICD-9-CM
730.18 Chr osteomyelit NEC
Approximate The match is approximate rather than exact.

Code HistoryHistory

FY 2016AddedAdded to the ICD-10-CM code setEffective October 1, 2015, the first year of ICD-10-CM.
FY 2017–2025No changes
FY 2026CurrentCurrent code set, no changesEffective October 1, 2025 through September 30, 2026.

Questions About M86.68Overview

Is M86.68 (Other chronic osteomyelitis) a billable code?

Yes. This is a billable ICD-10-CM code, specific enough to report other chronic osteomyelitis, other site on HIPAA-covered claims from October 1, 2025 through September 30, 2026.

What MS-DRG does M86.68 group to?

When other chronic osteomyelitis, other site is the principal diagnosis on an inpatient stay, it groups to MS-DRG 456, 457, 458, 539, 540, 541, with relative weights from 0.7715 to 8.4034 depending on complications. Higher weights mean higher Medicare reimbursement.

What is the ICD-9 equivalent of M86.68?

Under the General Equivalence Mappings, other chronic osteomyelitis, other site converts to ICD-9-CM 730.18 (chr osteomyelit NEC). The mapping is approximate, so confirm the match fits the documentation.

Footnotes

[1] Not chronic - A diagnosis code that does not fit the criteria for chronic condition (duration, ongoing medical treatment, and limitations) is considered not chronic. Some codes designated as not chronic are acute conditions. Other diagnosis codes that indicate a possible chronic condition, but for which the duration of the illness is not specified in the code description (i.e., we do not know the condition has lasted 12 months or longer) also are considered not chronic.