Is D73 a billable ICD-10-CM code?

No. D73 is a non-billable header code. Code to a higher level of specificity using one of its child codes.

Where does D73 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).

D73

D73 — Diseases of spleen

Non-billable headerICD-10-CM

D73 is a non-billable header ICD-10-CM code for diseases of spleen. It cannot be billed on its own: choose one of the more specific child codes below.

Other codes that can never be billed with D73

These codes carry an Excludes1 note pointing at D73. The conflict binds both ways, but ICD-10-CM only writes it down on one side — so you would not find this by reading D73 alone.

D73.1Hypersplenism
D70Neutropenia

Risk adjustment

D73 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.

Code to one of these instead D73

8 child codes. Green means billable.

Questions about D73

Is D73 a billable ICD-10-CM code?: No. D73 is a non-billable header code. Code to a higher level of specificity using one of its child codes.
Where does D73 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).