Is B05.1 a billable ICD-10-CM code?

Yes. B05.1 is a billable, specific ICD-10-CM code and is valid for submission on a claim.

Where does B05.1 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 B05.1?

B05.1 carries Excludes1 notes, which means the conditions they list can never be coded together with it on the same encounter. Some are written on the categories above B05.1 (B05) and apply to it just the same.

B05.1

B05.1 — Measles complicated by meningitis

Billable / specific codeICD-10-CM

B05.1 is a billable, specific ICD-10-CM code for measles complicated by meningitis. It is valid for submission on a claim.

Inclusion terms

Alternative wordings a physician may use in the chart for this same code.

Postmeasles meningitis

Excludes1 inherited from the categories above B05.1

These are not written on B05.1, but they bind it: a note on a category applies to every code beneath it. Billing B05.1 with anything listed here is a denial.

Written on B05 — Measles

subacute sclerosing panencephalitis (A81.1)

Other codes that can never be billed with B05.1

These codes carry an Excludes1 note pointing at B05.1. The conflict binds both ways, but ICD-10-CM only writes it down on one side — so you would not find this by reading B05.1 alone.

G02Meningitis in other infectious and parasitic diseases classified elsewhere
G04.01Postinfectious acute disseminated encephalitis and encephalomyelitis (postinfectious ADEM)
A87Viral meningitis

Risk adjustment

B05.1 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.

How B05.1 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 B05.1.

Meningitis›postmeasles
Measles›with›meningitis
Meningitis›in›measles

Code history

B05.1 has not changed since FY2024 — no addition, revision or deletion across the three most recent ICD-10-CM releases.

Related codes at this level

Codes that share B05. If B05.1 is not quite right, the correct code is usually one of these.

Questions about B05.1

Is B05.1 a billable ICD-10-CM code?: Yes. B05.1 is a billable, specific ICD-10-CM code and is valid for submission on a claim.
Where does B05.1 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 B05.1?: B05.1 carries Excludes1 notes, which means the conditions they list can never be coded together with it on the same encounter. Some are written on the categories above B05.1 (B05) and apply to it just the same.