What does ICD-10 code B05 mean?

ICD-10 code B05 is the standardized code used for measles in medical records and coding systems.

When is ICD-10 code B05 used?

Doctors, hospitals, and insurers may use ICD-10 code B05 when recording measles in a standardized format. This entry may also act as a broader category that points toward more specific child codes.

Does ICD-10 code B05 confirm a diagnosis?

No. A code helps standardize documentation and claims, but it should not be read as a substitute for a clinician's full assessment.

ICD10

ICD-10 Code B05: Measles

Name: ICD-10 Code B05: Measles
Creator: HealthAssure Clinical Team
Published: 2026-05-21T06:01:00.332Z

B05 is an ICD-10 diagnosis entry used to group records related to Measles. You may see this entry in coding references, medical records, or claims workflows when a broader diagnosis category is being reviewed before a more specific code is chosen. ICD-10 entries help standardize how diagnoses are organized for coding, reporting, analytics, and documentation. This code sits within the broader ICD-10 area for Certain infectious and parasitic diseases (A00-B99).

Reviewed by HealthAssure Clinical TeamUpdated 21 May 2026

What is this code?

ICD-10 entries help standardize how diagnoses are organized for coding, reporting, analytics, and documentation. This code sits within the broader ICD-10 area for Certain infectious and parasitic diseases (A00-B99).

When is it used?

May be used when a clinician documents measles in a patient's medical record.
May appear in hospital records, claims, referrals, and clinical documentation.
This code may act more like a grouping or parent code, so a more specific child code may be used in final documentation when available.

What it does not mean

A code alone does not explain severity, treatment plan, or outcome.
A medical code should not be treated as a substitute for a doctor's diagnosis or advice.
This entry may represent a broader category rather than the most specific billable code.

Code hierarchy

chapter

1Certain infectious and parasitic diseases (A00-B99)

block

B00-B09Viral infections characterized by skin and mucous membrane lesions

currentB00-B09

Official coding notes

Includes

morbilli

Excludes1 (do not code together)

subacute sclerosing panencephalitis (A81.1)

Where you may see this code

You may see this entry in coding references, medical records, or claims workflows when a broader diagnosis category is being reviewed before a more specific code is chosen.

Related specialists

Infectious Disease SpecialistGeneral Physician

Sibling codes

B00Herpesviral [herpes simplex] infections B01Varicella [chickenpox]B02Zoster [herpes zoster]B03Smallpoxbillable B04Monkeypoxbillable B06Rubella [German measles]B07Viral warts B08Other viral infections characterized by skin and mucous membrane lesions, not elsewhere classified B09Unspecified viral infection characterized by skin and mucous membrane lesionsbillable

Coding guidelines

Compatibility

Legacy code aligns to an official FY 2026 category. Frontend should resolve to the official category page and surface the billable child codes.

Legacy codes

B05

Replacement codes

B05.0 — Measles complicated by encephalitisB05.1 — Measles complicated by meningitisB05.2 — Measles complicated by pneumoniaB05.3 — Measles complicated by otitis mediaB05.4 — Measles with intestinal complicationsB05.9 — Measles without complication

Common synonyms

Measles

Frequently asked questions

About this content

This page is prepared by HealthAssure's clinical team using official coding standards from ICD-10. AI tools assist with drafting explanations, which are then reviewed and verified by healthcare professionals for accuracy. This content is for informational purposes and does not replace professional medical advice. Meet our team.