2026 ICD-10-CM Diagnosis Code B08.1Molluscum contagiosum

ICD-10-CM Codes›A00–B99›B00-B09›B08

ICD-10-CM B08.1
CMSSource: CMS FY 2026 ICD-10-CM dataset · Effective Oct 1, 2025 – Sep 30, 2026

B08.1 is a billable ICD-10-CM diagnosis code for molluscum contagiosum. It is valid on HIPAA claims for fiscal year 2026 (October 1, 2025 through September 30, 2026) and groups to MS-DRG 606 through 607. In AHRQ's Clinical Classifications Software (CCSR), this diagnosis falls under Viral infection.

Code Identity

ICD-10-CM Code
B08.1
Billable Status
Yes — Valid for Submission
Code Describes
Molluscum contagiosum
Short Description
Molluscum contagiosum
Same as the full description in the CMS dataset.
Parent Code
B08
Other viral infections characterized by skin and mucous membrane lesions, not elsewhere classified

Code Classification

ChapterA00–B99Certain infectious and parasitic diseases
SectionB00-B09Viral infections characterized by skin and mucous membrane lesions
CategoryB08Other viral infections characterized by skin and mucous membrane lesions, not elsewhere classified
This CodeB08.1Molluscum contagiosum

Approximate SynonymsGuidance

Alternate terms and clinical phrases that map to this code.

  • Erythema of skin of eyelid
  • Follicular conjunctivitis caused by Molluscum contagiosum virus
  • Genital Molluscum contagiosum
  • Infection of anogenital region caused by Molluscum contagiosum virus
  • Keratoconjunctivitis caused by molluscum contagiosum
  • Molluscum contagiosum blepharoconjunctivitis
  • Molluscum contagiosum infection
  • Molluscum contagiosum infection of eyelid
  • Molluscum contagiosum skin infection
  • Sexually transmissible infection caused by Molluscum contagiosum virus
  • Viral dermatitis of eyelid

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.

    • Bateman's
      • disease
    • Disease, diseased
      • Bateman's
    • Molluscum contagiosum(epitheliale)

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

  • Molluscum Contagiosum

    a common, benign, usually self-limited viral infection of the skin and occasionally the conjunctivae by a poxvirus (molluscum contagiosum virus). (dorland, 27th ed)

  • Molluscum contagiosum virus

    a species of molluscipoxvirus causing skin lesions in humans. it is transmitted by direct contact or from non-living reservoirs (fomites), such as books or clothing.

  • Molluscipoxvirus

    a genus of poxviridae, subfamily chordopoxvirinae, infecting humans. transmission is by direct contact among children, by sexual contact among young adults, or by fomites. molluscum contagiosum virus is the type species.

Patient EducationClinical

Skin Infections

Your skin is your body's largest organ. It has many different functions, including covering and protecting your body. It helps keep germs out. But sometimes the germs can cause a skin infection. It often happens when the germs enter your body through a break, cut, or wound on your skin.

The full article covers:

  • What are skin infections?
  • What causes skin infections?
  • Who is more likely to get a skin infection?
  • What are the symptoms of skin infections?
  • How are skin infections diagnosed?
  • How are skin infections treated?

Read the full article at MedlinePlus

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

Convert B08.1 to ICD-9-CMHistory

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

ICD-9-CM
078.0 Molluscum contagiosum
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 B08.1Overview

Is B08.1 a billable code?

Yes. This is a billable ICD-10-CM code, specific enough to report molluscum contagiosum on HIPAA-covered claims from October 1, 2025 through September 30, 2026.

What MS-DRG does B08.1 group to?

When molluscum contagiosum is the principal diagnosis on an inpatient stay, it groups to MS-DRG 606, 607, with relative weights from 0.9064 to 1.5132 depending on complications. Higher weights mean higher Medicare reimbursement.

What is the ICD-9 equivalent of B08.1?

Under the General Equivalence Mappings, molluscum contagiosum converts to ICD-9-CM 078.0 (molluscum contagiosum). 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.