MCMCB Pro
D57.434

D57.434Sickle-cell thalassemia beta zero with dactylitis

Billable / specific codeICD-10-CM

D57.434 is a billable, specific ICD-10-CM code for sickle-cell thalassemia beta zero with dactylitis. It is valid for submission on a claim.

Risk adjustment

D57.434 risk-adjusts. Under the CMS-HCC V28 model it maps to this category:

  • HCC 107 Sickle Cell Anemia (Hb-SS) and Thalassemia Beta Zero0.457 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

D57.434 is named in 15 Medicare coverage policies 15 listing it as supporting medical necessity. Which of them applies to you depends on your Medicare contractor, and coverage genuinely differs by state.

  • A55717Billing and Coding: Lab: Flow Cytometry
  • A56421Billing and Coding: CT of the Abdomen and Pelvis
  • A56580Billing and Coding: Computerized Axial Tomography (CT), Thorax
  • A56697Billing and Coding: Non-Invasive Vascular Studies

How D57.434 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 D57.434.

  • Dactylitissickle-cellBeta zero
  • Disease, diseasedsickle-cellthalassemiabeta zerowithdactylitis
  • Disease, diseasedsickle-cellthalassemiabeta zerowithacute chest syndromewith dactylitis
  • Disease, diseasedhemoglobin or HbS or SSbeta zerowithcrisiswithdactylitis

Related codes at this level

Codes that share D57.43. If D57.434 is not quite right, the correct code is usually one of these.

Questions about D57.434

Is D57.434 a billable ICD-10-CM code?
Yes. D57.434 is a billable, specific ICD-10-CM code and is valid for submission on a claim.
Where does D57.434 sit in the tabular list?
Diseases of the blood and blood-forming organs and certain disorders involving the immune mechanism (D50-D89), in the block Hemolytic anemias (D55-D59).
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.