ICD-10-CM
ICD-10 code for Cold sore: B00.1
The closest CDC title for "Cold sore" is B00.1, Herpesviral vesicular dermatitis. B00.1 is a billable code.
Source: CDC ICD-10-CM FY2027 order file dated June 16, 2026. Publisher page
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Codes under B00, then other CDC titles that name herpesviral vesicular dermatitis
A header groups codes and is not billed. A billable code is one you can report.
- B00Herpesviral [herpes simplex] infectionsHeader
- B00.0Eczema herpeticumBillable
- B00.1Herpesviral vesicular dermatitisBillable
- B00.2Herpesviral gingivostomatitis and pharyngotonsillitisBillable
- B00.3Herpesviral meningitisBillable
- B00.4Herpesviral encephalitisBillable
- B00.5Herpesviral ocular diseaseHeader
- B00.50Herpesviral ocular disease, unspecifiedBillable
- B00.51Herpesviral iridocyclitisBillable
- B00.52Herpesviral keratitisBillable
- B00.53Herpesviral conjunctivitisBillable
- B00.59Other herpesviral disease of eyeBillable
- B00.7Disseminated herpesviral diseaseBillable
- B00.8Other forms of herpesviral infectionsHeader
- B00.81Herpesviral hepatitisBillable
- B00.82Herpes simplex myelitisBillable
- B00.89Other herpesviral infectionBillable
- B00.9Herpesviral infection, unspecifiedBillable
Excludes1
Excludes1 means these codes are not reported together.
From B00. A note on a category applies to every code under it.
Excludes2
Excludes2 means the other condition can be reported with this one when both are documented.
From B00. A note on a category applies to every code under it.
Related conditions
Related pages
- B00.1 code detailsNotes, nearby codes, CMS-HCC group
- Category B00Every code under it
- Chapter 1Certain infectious and parasitic diseases
- ICD-10 codes by conditionA to Z
- Check a list of ICD-10 codes
- Denial code CO-11Diagnosis does not support the procedure
- Denial code CO-146Diagnosis invalid for the date of service
- HCPCS Level II code lookup
Questions
What is the ICD-10 code for Cold sore?
The closest CDC title for "Cold sore" is B00.1, Herpesviral vesicular dermatitis. B00.1 is a billable code.
Is B00.1 billable?
Yes. B00.1 is a billable code in the FY2027 ICD-10-CM file. Use a more specific code when the record documents one.
What documentation notes apply to B00.1?
The CDC tabular list gives 1 Excludes1 note (not coded together), 3 Excludes2 notes (may be coded together when both are documented) for B00.1 and the categories above it. They are listed on this page.
What chapter is B00.1 in?
Chapter 1. Certain infectious and parasitic diseases.
When do ICD-10-CM codes change?
Every October 1, with the new fiscal year file. Some years add April 1 updates. This page uses the FY2027 file, effective October 1, 2026.