Is D77 a billable ICD-10-CM code?

Yes. D77 is a billable, specific ICD-10-CM code and is valid for submission on a claim.

Where does D77 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).

What cannot be coded together with D77?

D77 carries an Excludes1 note, which means the conditions it lists can never be coded together with it on the same encounter.

D77

D77 — Other disorders of blood and blood-forming organs in diseases classified elsewhere

Billable / specific codeICD-10-CM

D77 is a billable, specific ICD-10-CM code for other disorders of blood and blood-forming organs in diseases classified elsewhere. 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.

rupture of spleen due to Plasmodium vivax malaria (B51.0)
splenitis, splenomegaly in late syphilis (A52.79)
splenitis, splenomegaly in tuberculosis (A18.85)

Code first

The underlying condition must be sequenced before this code.

underlying disease, such as:
amyloidosis (E85.-)
congenital early syphilis (A50.0-)
echinococcosis (B67.0-B67.9)
malaria (B50.0-B54)
schistosomiasis [bilharziasis] (B65.0-B65.9)
vitamin C deficiency (E54)

Risk adjustment

D77 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

D77 is named in 14 Medicare coverage policies — 14 listing it as supporting medical necessity. Which of them applies to you depends on your Medicare contractor, and coverage genuinely differs by state.

A56199Billing and Coding: Molecular Pathology Procedures
A56199Billing and Coding: Molecular Pathology Procedures
A56199Billing and Coding: Molecular Pathology Procedures
A56199Billing and Coding: Molecular Pathology Procedures

Questions about D77

Is D77 a billable ICD-10-CM code?: Yes. D77 is a billable, specific ICD-10-CM code and is valid for submission on a claim.
Where does D77 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).
What cannot be coded together with D77?: D77 carries an Excludes1 note, which means the conditions it lists can never be coded together with it on the same encounter.