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D47.4

D47.4Osteomyelofibrosis

Billable / specific codeICD-10-CM

D47.4 is a billable, specific ICD-10-CM code for osteomyelofibrosis. It is valid for submission on a claim.

Excludes1 — never code together

These conditions cannot occur together. Billing both on the same encounter is a denial.

  • acute myelofibrosis (C94.4-)

Inclusion terms

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

  • Chronic idiopathic myelofibrosis
  • Myelofibrosis (idiopathic) (with myeloid metaplasia)
  • Myelosclerosis (megakaryocytic) with myeloid metaplasia
  • Secondary myelofibrosis in myeloproliferative disease

Other codes that can never be billed with D47.4

These codes carry an Excludes1 note pointing at D47.4. The conflict binds both ways, but ICD-10-CM only writes it down on one side — so you would not find this by reading D47.4 alone.

Risk adjustment

D47.4 risk-adjusts. Under the CMS-HCC V28 model it maps to this category:

  • HCC 19 Myelodysplastic Syndromes, Multiple Myeloma, and Other Cancers1.798 RAF

Coefficient shown for the Community Non-dual Aged segment. A higher HCC in the same hierarchy will suppress this one, so capturing it does not always add score.

Medicare coverage

D47.4 is named in 47 Medicare coverage policies 47 listing it as supporting medical necessity. Which of them applies to you depends on your Medicare contractor, and coverage genuinely differs by state.

  • A56199Billing and Coding: Molecular Pathology Procedures
  • A56199Billing and Coding: Molecular Pathology Procedures
  • A56199Billing and Coding: Molecular Pathology Procedures
  • A56199Billing and Coding: Molecular Pathology Procedures

How D47.4 is indexed

Coders do not find codes by browsing the tabular list — they look them up in the alphabetic index, under the word the physician wrote. These are the index entries that lead here, so you can see which chart wordings map to D47.4.

  • Osteomyelofibrosis
  • Myelofibrosisidiopathic(chronic)
  • Myelofibrosiswith myeloid metaplasia
  • Myelosclerosismegakaryocytic
  • Myelosclerosiswith myeloid metaplasia
  • Myelofibrosissecondaryin myeloproliferative disease
  • Myelosclerosismegakaryocyticwith myeloid metaplasia

Related codes at this level

Codes that share D47. If D47.4 is not quite right, the correct code is usually one of these.

Questions about D47.4

Is D47.4 a billable ICD-10-CM code?
Yes. D47.4 is a billable, specific ICD-10-CM code and is valid for submission on a claim.
Where does D47.4 sit in the tabular list?
Neoplasms (C00-D49), in the block Neoplasms of uncertain behavior, polycythemia vera and myelodysplastic syndromes (D37-D48).
What cannot be coded together with D47.4?
D47.4 carries an Excludes1 note, which means the conditions it lists can never be coded together with it on the same encounter.
ICD-10-CMFY2026-Apr· effective April 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.