2026 ICD-10-CM Diagnosis Code B07.9Viral wart, unspecified

ICD-10-CM Codes›A00–B99›B00-B09›B07

ICD-10-CM B07.9
CMSSource: CMS FY 2026 ICD-10-CM dataset · Effective Oct 1, 2025 – Sep 30, 2026

B07.9 is a billable ICD-10-CM diagnosis code for viral wart, unspecified. 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
B07.9
Billable Status
Yes — Valid for Submission
Code Describes
Viral wart, unspecified
Short Description
Viral wart, unspecified
Same as the full description in the CMS dataset.
Parent Code
B07
Viral warts

Code Classification

ChapterA00–B99Certain infectious and parasitic diseases
SectionB00-B09Viral infections characterized by skin and mucous membrane lesions
CategoryB07Viral warts
This CodeB07.9Viral wart, unspecified

Approximate SynonymsGuidance

Alternate terms and clinical phrases that map to this code.

  • Beard wart
  • Cervical smear - wart virus
  • Condyloma acuminatum of the anogenital region
  • Digitate wart
  • Facial wart
  • Filiform wart
  • Oral wart
  • Perianal warts
  • Perineal wart
  • Post-immunosuppression viral warts
  • Verruca vulgaris
  • Verruca vulgaris of skin of cheek
  • Verruca vulgaris of skin of lower extremity
  • Verruca vulgaris of skin of scalp
  • Viral wart
  • Viral wart on finger
  • Viral wart on lip
  • Viral wart on toe
  • Warts in immune-deficient state
  • Warts of perianal region in infancy caused by human papillomavirus
  • Warts, immunodeficiency, lymphedema, anogenital dysplasia syndrome
  • Warty dyskeratoma

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.

    • Verruca(due to HPV) (filiformis) (simplex) (viral) (vulgaris)
    • Wart(due to HPV) (filiform) (infectious) (viral)

Clinical ClassificationClinical

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

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

Patient EducationClinical

Warts

Warts are growths on your skin caused by an infection with humanpapilloma virus, or HPV. Types of warts include :

Read the full article at MedlinePlus

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

Convert B07.9 to ICD-9-CMHistory

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

ICD-9-CM
078.10 Viral warts NOS
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 B07.9Overview

Is B07.9 (Viral warts) a billable code?

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

What MS-DRG does B07.9 group to?

When viral wart, unspecified 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 B07.9?

Under the General Equivalence Mappings, viral wart, unspecified converts to ICD-9-CM 078.10 (viral warts NOS). 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.