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

B07.9 is a billable ICD-10-CM diagnosis code for viral wart, unspecified. 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
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
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

Instructional NotesGuidance

Instructions from the official ICD-10-CM Tabular List that apply to B07.9: its own notes plus those printed at B07 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 B07 Viral warts applies to 3 codes
  • verruca simplex
  • verruca vulgaris
  • viral warts due to human papillomavirus
From Chapter 1 (A00-B99) Certain infectious and parasitic diseases applies to 1,068 codes
  • diseases generally recognized as communicable or transmissible

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 B07 Viral warts applies to 3 codes
  • anogenital (venereal) warts (A63.0)
  • papilloma of bladder (D41.4)
  • papilloma of cervix (D26.0)
  • papilloma larynx (D14.1)
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 B07.9, its category, or a range that includes it.

Excludes1 2

These codes carry an Excludes1 note naming B07.9: they are not reported together with it, unless the two conditions are unrelated.

  • B33.8 Other specified viral diseases
    viral warts due to human papillomavirus infection (B07) names B07, which includes this code
  • B34 Viral infection of unspecified site
    viral warts due to human papillomavirus infection (B07) names B07, which includes this code

Excludes2 2

These codes carry an Excludes2 note naming B07.9: its condition is not part of those codes, and both may be reported when the patient has both.

  • Block L00-L08 Infections of the skin and subcutaneous tissue
    viral warts (B07.-) names B07.-, which includes this code
  • Chapter 12 (L00-L99) Diseases of the skin and subcutaneous tissue
    viral warts (B07.-) names B07.-, which includes this code

Index to Diseases and InjuriesGuidance

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

  • Warts

    benign epidermal proliferations or tumors; some are viral in origin.

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

Questions About B07.9Overview

What is the ICD-10 code for viral wart, unspecified?

The ICD-10-CM code for viral wart, unspecified is B07.9 (sometimes written as B079). It is billable on HIPAA-covered claims from October 1, 2026 through September 30, 2027.

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, 2026 through September 30, 2027.

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 607, 606, with relative weights from 0.8772 to 1.5721 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.