2026 ICD-10-CM Diagnosis Code B06.9Rubella without complication

ICD-10-CM Codes›A00–B99›B00-B09›B06

ICD-10-CM B06.9
CMSSource: CMS FY 2026 ICD-10-CM dataset · Effective Oct 1, 2025 – Sep 30, 2026

B06.9 is a billable ICD-10-CM diagnosis code for rubella without complication. It is valid on HIPAA claims for fiscal year 2026 (October 1, 2025 through September 30, 2026) and groups to MS-DRG 865 through 866. Coders also document this condition as pregnancy eruption. In AHRQ's Clinical Classifications Software (CCSR), this diagnosis falls under Viral infection.

Code Identity

ICD-10-CM Code
B06.9
Billable Status
Yes — Valid for Submission
Code Describes
Rubella without complication
Short Description
Rubella without complication
Same as the full description in the CMS dataset.
Parent Code
B06
Rubella [German measles]

Code Classification

ChapterA00–B99Certain infectious and parasitic diseases
SectionB00-B09Viral infections characterized by skin and mucous membrane lesions
CategoryB06Rubella [German measles]
This CodeB06.9Rubella without complication

Approximate SynonymsGuidance

Alternate terms and clinical phrases that map to this code.

  • Pregnancy eruption
  • Rubella
  • Rubella in mother complicating childbirth
  • Rubella in mother complicating pregnancy, childbirth AND/OR puerperium
  • Rubella in pregnancy
  • Viral disease in mother complicating childbirth

Tabular List NotesGuidance

Coding notes and annotation back-references applicable to this code.

Inclusion Terms

  • Rubella NOS

Index to Diseases and InjuriesGuidance

Alphabetical index entries that point to this code.

External Cause of Injuries IndexGuidance

References for this code in the External Cause of Injuries Index.

    • Rash(toxic)
      • rose
        • epidemic
    • Rose
      • rash
        • epidemic
    • Rubella(German measles)

Clinical ClassificationClinical

AHRQ’s CCSR groups this code into broader clinical categories.

CCSR INF008
Viral infection
Default principal diagnosis: inpatient Yes · outpatient Yes

Clinical InformationClinical

  • Rubella

    an acute infectious disease caused by the rubella virus. the virus enters the respiratory tract via airborne droplet and spreads to the lymphatic system.

  • Rubella Syndrome, Congenital

    transplacental infection of the fetus with rubella usually in the first trimester of pregnancy, as a consequence of maternal infection, resulting in various developmental abnormalities in the newborn infant. they include cardiac and ocular lesions, deafness, microcephaly, mental retardation, and generalized growth retardation. (from dorland, 27th ed)

  • Rubella Vaccine

    a live attenuated virus vaccine of duck embryo or human diploid cell tissue culture origin, used for routine immunization of children and for immunization of nonpregnant adolescent and adult females of childbearing age who are unimmunized and do not have serum antibodies to rubella. children are usually immunized with measles-mumps-rubella combination vaccine. (dorland, 28th ed)

  • Rubella virus

    the type (and only) species of rubivirus causing acute infection in humans, primarily children and young adults. humans are the only natural host. a live, attenuated vaccine is available for prophylaxis.

  • Rubivirus

    a genus of the family togaviridae containing only one recognized species, rubella virus. transmission is primarily by aerosolization.

Patient EducationClinical

Rubella

Rubella is an infection caused by a virus. It is usually mild with fever and a rash. About half of the people who get rubella do not have symptoms. If you do get them, symptoms may include:

Read the full article at MedlinePlus

Courtesy of MedlinePlus, a service of the U.S. National Library of Medicine.

Convert B06.9 to ICD-9-CMHistory

The closest ICD-9-CM equivalents under the General Equivalence Mappings.

ICD-9-CM
056.9 Rubella uncomplicated
Exact Match The mapping is direct, with no qualifiers.

Code HistoryHistory

FY 2016AddedAdded to the ICD-10-CM code setEffective October 1, 2015, the first year of ICD-10-CM.
FY 2017–2025No changes
FY 2026CurrentCurrent code set, no changesEffective October 1, 2025 through September 30, 2026.

Questions About B06.9Overview

Is B06.9 (Rubella [German measles]) a billable code?

Yes. This is a billable ICD-10-CM code, specific enough to report rubella without complication on HIPAA-covered claims from October 1, 2025 through September 30, 2026.

What MS-DRG does B06.9 group to?

When rubella without complication is the principal diagnosis on an inpatient stay, it groups to MS-DRG 865, 866, with relative weights from 0.8696 to 1.4983 depending on complications. Higher weights mean higher Medicare reimbursement.

What is the ICD-9 equivalent of B06.9?

Under the General Equivalence Mappings, rubella without complication converts to ICD-9-CM 056.9 (rubella uncomplicated). The mapping is a direct match.

Footnotes

[1] Not chronic - A diagnosis code that does not fit the criteria for chronic condition (duration, ongoing medical treatment, and limitations) is considered not chronic. Some codes designated as not chronic are acute conditions. Other diagnosis codes that indicate a possible chronic condition, but for which the duration of the illness is not specified in the code description (i.e., we do not know the condition has lasted 12 months or longer) also are considered not chronic.