D47.01 — Cutaneous mastocytosis
D47.01 is a billable, specific ICD-10-CM code for cutaneous mastocytosis. 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.
Inclusion terms
Alternative wordings a physician may use in the chart for this same code.
- Diffuse cutaneous mastocytosis
- Maculopapular cutaneous mastocytosis
- Solitary mastocytoma
- Telangiectasia macularis eruptiva perstans
- Urticaria pigmentosa
Excludes1 inherited from the categories above D47.01
These are not written on D47.01, but they bind it: a note on a category applies to every code beneath it. Billing D47.01 with anything listed here is a denial.
Other codes that can never be billed with D47.01
These codes carry an Excludes1 note pointing at D47.01. The conflict binds both ways, but ICD-10-CM only writes it down on one side — so you would not find this by reading D47.01 alone.
Risk adjustment
D47.01 does not map to an HCC and does not risk-adjust under CMS-HCC V28. That is normal — most ICD-10 codes do not. It still needs to be coded correctly; it just will not move a RAF score.
Medicare coverage
D47.01 is named in 26 Medicare coverage policies — 26 listing it as supporting medical necessity. Which of them applies to you depends on your Medicare contractor, and coverage genuinely differs by state.
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How D47.01 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 D47.01.
- Mastocytoma›solitary
- Mastocytosis›cutaneous(diffuse) (maculopapular)
- Telangiectasia, telangiectasis›macularis eruptiva perstans
- Urticaria›pigmentosa
Code history
D47.01 has not changed since FY2024 — no addition, revision or deletion across the three most recent ICD-10-CM releases.
Related codes at this level
Codes that share D47.0. If D47.01 is not quite right, the correct code is usually one of these.
Questions about D47.01
- Is D47.01 a billable ICD-10-CM code?
- Yes. D47.01 is a billable, specific ICD-10-CM code and is valid for submission on a claim.
- Where does D47.01 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 D47.01?
- D47.01 carries Excludes1 notes, which means the conditions they list can never be coded together with it on the same encounter. Some are written on the categories above D47.01 (D47.0) and apply to it just the same.