2027 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 2027 ICD-10-CM dataset · Effective Oct 1, 2026 – Sep 30, 2027

B08.1 is a billable ICD-10-CM diagnosis code for molluscum contagiosum. It is valid on HIPAA claims for fiscal year 2027 (October 1, 2026 through September 30, 2027) 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
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

Instructional NotesGuidance

Instructions from the official ICD-10-CM Tabular List that apply to B08.1: its own notes plus those printed at B08 and Chapter 1. A note printed at a category, block or chapter applies to every code under it.

Includes

Further defines, or gives examples of, the content of the category.

From Chapter 1 (A00-B99) Certain infectious and parasitic diseases applies to 1,068 codes
  • diseases generally recognized as communicable or transmissible

Excludes1

Not coded here: the excluded code is never reported together with this one, unless the two conditions are unrelated.

From B08 Other viral infections characterized by skin and mucous membrane lesions, not elsewhere classified applies to 22 codes
  • vesicular stomatitis virus disease (A93.8)

Excludes2

Not included here: the excluded condition is not part of this code, but a patient may have both, so both codes may be reported.

From Chapter 1 (A00-B99) Certain infectious and parasitic diseases applies to 1,068 codes
  • carrier or suspected carrier of infectious disease (Z22.-)
  • certain localized infections - see body system-related chapters
  • infectious and parasitic diseases complicating pregnancy, childbirth and the puerperium (O98.-)
  • infectious and parasitic diseases specific to the perinatal period (P35-P39)
  • influenza and other acute respiratory infections (J00-J22)

Use Additional Code

Add a second code, after this one, to fully describe the condition.

From Chapter 1 (A00-B99) Certain infectious and parasitic diseases applies to 1,068 codes
  • code to identify resistance to antimicrobial drugs (Z16.-)

Source: CMS ICD-10-CM Tabular List. How to read instructional notes.

Referenced in Other NotesGuidance

Instructional notes printed at other codes that name B08.1, its category, or a range that includes it.

Excludes2 1

These codes carry an Excludes2 note naming B08.1: its condition is not part of those codes, and both may be reported when the patient has both.

  • A63 Other predominantly sexually transmitted diseases, not elsewhere classified
    molluscum contagiosum (B08.1)

Index to Diseases and InjuriesGuidance

Alphabetical index entries that point to this code.

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)

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 2017–2026No changes
FY 2027CurrentCurrent code set, no changesEffective October 1, 2026 through September 30, 2027.

Questions About B08.1Overview

What is the ICD-10 code for molluscum contagiosum?

The ICD-10-CM code for molluscum contagiosum is B08.1 (sometimes written as B081). It is billable on HIPAA-covered claims from October 1, 2026 through September 30, 2027.

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, 2026 through September 30, 2027.

What MS-DRG does B08.1 group to?

When molluscum contagiosum is the principal diagnosis on an inpatient stay, it groups to MS-DRG 607, 606, with relative weights from 0.8772 to 1.5721 depending on complications. Higher weights mean higher Medicare reimbursement.

Can B08.1 be reported with A93.8?

Not as a rule. The Excludes1 note at B08, which applies to B08.1, lists "vesicular stomatitis virus disease (A93.8)". An Excludes1 note means the excluded code is never reported together with this one; the only exception is when the two conditions are unrelated to each other (Official Guidelines, Section I.A.12.a).

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.