Is B05 a billable ICD-10-CM code?

No. B05 is a non-billable header code. Code to a higher level of specificity using one of its child codes.

Where does B05 sit in the tabular list?

Certain infectious and parasitic diseases (A00-B99), in the block Viral infections characterized by skin and mucous membrane lesions (B00-B09).

What cannot be coded together with B05?

B05 carries an Excludes1 note, which means the conditions it lists can never be coded together with it on the same encounter.

B05

B05 — Measles

Non-billable headerICD-10-CM

B05 is a non-billable header ICD-10-CM code for measles. It cannot be billed on its own: choose one of the more specific child codes below.

Excludes1 — never code together

These conditions cannot occur together. Billing both on the same encounter is a denial.

subacute sclerosing panencephalitis (A81.1)

Includes

Conditions this code covers.

morbilli

Other codes that can never be billed with B05

These codes carry an Excludes1 note pointing at B05. The conflict binds both ways, but ICD-10-CM only writes it down on one side — so you would not find this by reading B05 alone.

A85Other viral encephalitis, not elsewhere classified
A87Viral meningitis
G02Meningitis in other infectious and parasitic diseases classified elsewhere
G04.01Postinfectious acute disseminated encephalitis and encephalomyelitis (postinfectious ADEM)
G05Encephalitis, myelitis and encephalomyelitis in diseases classified elsewhere
H67Otitis media in diseases classified elsewhere
J17Pneumonia in diseases classified elsewhere

Risk adjustment

B05 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 B05

7 child codes. Green means billable.

Questions about B05

Is B05 a billable ICD-10-CM code?: No. B05 is a non-billable header code. Code to a higher level of specificity using one of its child codes.
Where does B05 sit in the tabular list?: Certain infectious and parasitic diseases (A00-B99), in the block Viral infections characterized by skin and mucous membrane lesions (B00-B09).
What cannot be coded together with B05?: B05 carries an Excludes1 note, which means the conditions it lists can never be coded together with it on the same encounter.