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Q78.2

Q78.2: Osteopetrosis

Billable / specific codeICD-10-CMPOA exempt

Q78.2 is a billable, specific ICD-10-CM code for osteopetrosis. It is valid for submission on a claim.

Check Q78.2 with the rest of the claim: free scrubber

Inclusion terms

Alternative wordings a physician may use in the chart for this same code.

  • Albers-Schönberg syndrome
  • Osteosclerosis NOS

Excludes2 inherited from the categories above Q78.2

Not part of this code, but both may be coded when both are present.

Written on Q78: Other osteochondrodysplasias

  • congenital myotonic chondrodystrophy (G71.13)

Other codes that can never be billed with Q78.2

Their own Excludes1 notes name this code, so the conflict is not listed above.

  • M85Other disorders of bone density and structure
  • M85.8Other specified disorders of bone density and structure

Risk adjustment

No CMS-HCC V28 category: this code does not change a RAF score.

Medicare coverage

Q78.2 is named in 8 Medicare coverage policies: 8 listing it as supporting medical necessity. Which one applies depends on your Medicare contractor.

  • A56416Billing and Coding: Assays for Vitamins and Metabolic Function
  • A56798Billing and Coding: Vitamin D Assay Testing
  • A56841Billing and Coding: Vitamin D; 25 hydroxy, includes fraction(s), if performed
  • A57204Billing and Coding: MRI and CT Scans of the Head and Neck

Alphabetic index entries that lead here

  • Albers-Schönberg syndrome
  • Ivory bones
  • Osteopetrosis(familial)
  • Osteosclerosis
  • Disease, diseased›Albers-Schönberg(marble bones)
  • Marble›bones
  • Osteosclerosis›fragilitas(generalisata)

Code history

Unchanged in every release from FY2024 to FY2027.

Other codes under Q78

ICD-10-CMFY2027· effective October 1, 2026

Loaded directly from the CMS/NCHS ICD-10-CM public-domain release: see data sources and our editorial policy. If this page disagrees with the CMS tabular list, this page is wrong. Reference information for professional coders; not medical or billing advice.