D47.4 — Osteomyelofibrosis
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
- Myelofibrosis›idiopathic(chronic)
- Myelofibrosis›with myeloid metaplasia
- Myelosclerosis›megakaryocytic
- Myelosclerosis›with myeloid metaplasia
- Myelofibrosis›secondary›in myeloproliferative disease
- Myelosclerosis›megakaryocytic›with 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.
- D47.0Mast cell neoplasms of uncertain behavior
- D47.1Chronic myeloproliferative disease
- D47.2Monoclonal gammopathy
- D47.3Essential (hemorrhagic) thrombocythemia
- D47.ZOther specified neoplasms of uncertain behavior of lymphoid, hematopoietic and related tissue
- D47.9Neoplasm of uncertain behavior of lymphoid, hematopoietic and related tissue, unspecified
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.