D57.42 — Sickle-cell thalassemia beta zero without crisis
D57.42 is a billable, specific ICD-10-CM code for sickle-cell thalassemia beta zero without crisis. It is valid for submission on a claim.
Inclusion terms
Alternative wordings a physician may use in the chart for this same code.
- HbS-beta zero without crisis
- Sickle-cell beta zero without crisis
Risk adjustment
D57.42 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
D57.42 is named in 13 Medicare coverage policies — 13 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
- A56464Billing and Coding: Flow Cytometry
- A56580Billing and Coding: Computerized Axial Tomography (CT), Thorax
How D57.42 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 D57.42.
- Disease, diseased›hemoglobin or Hb›S or SS›beta zero
- Disease, diseased›sickle-cell›thalassemia›beta zero
- Disease, diseased›hemoglobin or Hb›S or SS›beta zero›without crisis
- Disease, diseased›sickle-cell›thalassemia›beta zero›without crisis
Related codes at this level
Codes that share D57.4. If D57.42 is not quite right, the correct code is usually one of these.
Questions about D57.42
- Is D57.42 a billable ICD-10-CM code?
- Yes. D57.42 is a billable, specific ICD-10-CM code and is valid for submission on a claim.
- Where does D57.42 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).