ICDcodes.org
FY2027

B00.1 — Herpesviral vesicular dermatitis

Billable

Is B00.1 billable?

Yes — B00.1 is billable for FY2027. B00.1 is a valid, billable ICD-10-CM code at the highest level of specificity in its branch. B00.1 may be submitted for encounters from October 1, 2026 through September 30, 2027.

B00.1 at a glance

CodeB00.1
DescriptionHerpesviral vesicular dermatitis
BillableYes
Code setICD-10-CM FY2027
Valid for encountersOctober 1, 2026 – September 30, 2027

Which MS-DRGs does B00.1 group to?

B00.1 sits in MDC 03 and helps define the logic of 3 MS-DRGs (version 44, FY2027). Which one a stay actually groups to also depends on procedures and secondary diagnoses.

  • 154Other Ear, Nose, Mouth and Throat Diagnoses with MCCmedical
  • 155Other Ear, Nose, Mouth and Throat Diagnoses with CCmedical
  • 156Other Ear, Nose, Mouth and Throat Diagnoses without CC/MCCmedical

How is B00.1 listed in the Alphabetic Index?

These are the routes through the Alphabetic Index that lead to B00.1. They show the wording a clinician may have documented, which often differs from the Tabular description.

  • Coldsore
  • Blister › fever (nonthermal)
  • Dermatitis › herpesviral, vesicular (eczematous)
  • Dermatitis › vesicular, herpesviral (eczematous)
  • Fever › blister (inanition) (of unknown origin) (persistent) (with chills) (with rigor)
  • Fever › sore (inanition) (of unknown origin) (persistent) (with chills) (with rigor)
  • Herpes, herpesvirus, herpetic › facialis
  • Herpes, herpesvirus, herpetic › febrilis
  • Herpes, herpesvirus, herpetic › labialis
  • Herpes, herpesvirus, herpetic › lip
  • Herpes, herpesvirus, herpetic › simplex › external ear
  • Otitis › externa › in › herpesvirus infection (acute)

Inclusion terms

Alternative wording in documentation that is classified to B00.1.

  • Herpes simplex facialis
  • Herpes simplex labialis
  • Herpes simplex otitis externa
  • Vesicular dermatitis of ear
  • Vesicular dermatitis of lip

Excludes1 — never code together — inherited from B00

The conditions below can never be reported together with B00.1 on the same claim. An Excludes1 note means the two conditions cannot occur in the same patient, so reporting both is a coding error.

  • congenital herpesviral infections (P35.2)

Use additional code — inherited from Chapter 1

Report an additional code alongside B00.1 to fully describe the condition. B00.1 is sequenced first.

  • code to identify resistance to antimicrobial drugs (Z16.-)

Excludes2 — not included here — inherited from Chapter 1

The conditions below are not part of B00.1, but a patient may have both at the same time. When documentation supports it, B00.1 and the excluded code may both be reported.

  • 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)

Excludes2 — not included here — inherited from B00

The conditions below are not part of B00.1, but a patient may have both at the same time. When documentation supports it, B00.1 and the excluded code may both be reported.

  • anogenital herpesviral infection (A60.-)
  • gammaherpesviral mononucleosis (B27.0-)
  • herpangina (B08.5)

How long has B00.1 existed?

B00.1 has been in ICD-10-CM since at least FY2016, the earliest fiscal year on record here.

Derived from the official order files for FY2016–FY2026. FY2017 and FY2020 publish no order file, so those years are not covered.

Which codes are confused with B00.1?

ICD-10-CM declares these codes mutually exclusive with B00.1 — exactly one of each pair can be correct for a given encounter.

Which conditions are coded to B00.1?

What other codes are in the B00 family? (8)