D73.4 — Cyst of spleen
D73.4 is a billable, specific ICD-10-CM code for cyst of spleen. It is valid for submission on a claim.
Risk adjustment
D73.4 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
D73.4 is named in 4 Medicare coverage policies — 4 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
- A57689Billing and Coding: Lab: Flow Cytometry
How D73.4 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 D73.4.
- Cyst›spleen NEC
Related codes at this level
Codes that share D73. If D73.4 is not quite right, the correct code is usually one of these.
Questions about D73.4
- Is D73.4 a billable ICD-10-CM code?
- Yes. D73.4 is a billable, specific ICD-10-CM code and is valid for submission on a claim.
- Where does D73.4 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 Other disorders of blood and blood-forming organs (D70-D77).