ICD-10-CM 2027 diagnosis code
B07.9Viral wart, unspecified
B07.9 is a valid, billable ICD-10-CM code for viral wart, unspecified. It can be reported on claims for dates of service from October 1, 2026 – September 30, 2027.
Looking up by condition? See ICD-10 code for Wart, ICD-10 code for Verruca.
Code unchanged since ICD-10-CM took effect on October 1, 2015. Source: official FY2027 ICD-10-CM release from CDC/NCHS and CMS. Page updated September 29, 2026. About our data
About B07.9
B07.9 is the ICD-10-CM diagnosis code for viral wart, unspecified. It belongs to category B07 (viral warts), block B00-B09 (viral infections characterized by skin and mucous membrane lesions) and chapter 1 (certain infectious and parasitic diseases). It is billable, so it can be reported on its own for dates of service from October 1, 2026 through September 30, 2027.
Within B07, choose B07.9 (Viral wart, unspecified) only when documentation doesn't support a more specific option: plantar wart (B07.0) and other viral warts (B07.8).
It is not a CC or MCC, so as a secondary diagnosis it doesn't change the MS-DRG severity level.
In MS-DRG v44.0, it is part of the grouping logic for DRG 606 (Minor Skin Disorders with MCC, relative weight 1.5728) and DRG 607 (Minor Skin Disorders without MCC, relative weight 0.8772), in MDC 09 (Diseases and Disorders of the Skin, Subcutaneous Tissue and Breast), as a principal or secondary diagnosis. The DRG a claim lands in depends on the principal diagnosis, procedures and any CC/MCC secondary diagnoses.
It has been part of ICD-10-CM since the code set took effect on October 1, 2015 and hasn't changed since.
Before ICD-10, this condition was coded in ICD-9-CM as 078.10 (viral warts, unspecified).
Notes that apply from higher levels
Instructions written at a parent level also apply to B07.9.
› From B07 Viral warts
Broader instructions also apply from Chapter 1: Certain infectious and parasitic diseases.
Alphabetic index entries
2 entriesTerms in the official ICD-10-CM index that lead to B07.9.
MS-DRG v44.0 grouping
All DRGs →Inpatient MS-DRGs this diagnosis can group to, as the principal or a secondary diagnosis, depending on the rest of the claim.
MDC 09 · Diseases and Disorders of the Skin, Subcutaneous Tissue and Breast
ICD-9-CM equivalent
Converter →- 078.10Viral warts, unspecifiedexact
From the CMS 2018 General Equivalence Mappings (GEMs), the final GEMs release.
Code history
- 2016
- 2017
- 2018
- 2019
- 2020
- 2021
- 2022
- 2023
- 2024
- 2025
- 2026
- 2027
- FY2016 (effective 10/1/2015): Added (first year of ICD-10-CM)
- No changes since FY2016.
Common questions about B07.9
Is B07.9 billable?
- Yes. B07.9 is a billable/specific ICD-10-CM code valid for FY2027 (October 1, 2026 – September 30, 2027).
Can B07.9 be used as a principal diagnosis?
- Yes. The Medicare Code Editor doesn't restrict B07.9 as a principal diagnosis.
Is B07.9 a CC or MCC?
- No. B07.9 is neither a CC nor an MCC under MS-DRG v44.0.
What DRG does B07.9 group to?
- B07.9 is used in the MS-DRG v44.0 logic for MS-DRG 606 (Minor Skin Disorders with MCC) and MS-DRG 607 (Minor Skin Disorders without MCC). Which one applies depends on whether it is the principal diagnosis and on the rest of the claim.
What is the ICD-9 code for B07.9?
- The CMS General Equivalence Mappings map B07.9 to ICD-9-CM 078.10.