DxCodebookFY2027 · Oct 1, 2026 – Sep 30, 2027

Block · Chapter 1

B00-B09 Viral infections characterized by skin and mucous membrane lesions (B00-B09)

Block B00-B09 groups 10 categories with 82 billable codes in FY2027.

Where it sits

  1. Chapter 1 Certain infectious and parasitic diseases (A00-B99)
  2. B00-B09 Viral infections characterized by skin and mucous membrane lesions (B00-B09)

Neighbouring blocks

Categories
10
Billable codes
82
CC codes
39
MCC codes
12
HCC V28 codes
5
New FY2027
0

Categories in B00-B09

  • B00

    Herpesviral [herpes simplex] infections

    Coldsore → B00.1

    • 15 billable codes
    • 8 CC
    • 4 MCC
    • 2 with HCC
  • B01

    Varicella [chickenpox]

    Varicella → B01.9

    • 7 billable codes
    • 4 CC
    • 3 MCC
    • 1 with HCC
  • B02

    Zoster [herpes zoster]

    Postherpetic neuralgia (zoster) → B02.29

    • 16 billable codes
    • 13 CC
    • 2 MCC
    • 1 with HCC
  • B03

    Smallpox

    Alastrim → B03

    • Billable, no subdivisions
    • 1 CC
  • B04

    Monkeypox

    Mpox → B04

    • Billable, no subdivisions
    • 1 CC
  • B05

    Measles

    Koplik's spots → B05.9

    • 8 billable codes
    • 4 CC
    • 2 MCC
  • B06

    Rubella [German measles]

    Rubella (German measles) → B06.9

    • 8 billable codes
    • 6 CC
    • 1 MCC
    • 1 with HCC
  • B07

    Viral warts

    Epidermodysplasia verruciformis → B07.8

    • 3 billable codes
  • B08

    Other viral infections characterized by skin and mucous membrane lesions, not elsewhere classified

    Cowpox → B08.010

    • 22 billable codes
    • 2 CC
  • B09

    Unspecified viral infection characterized by skin and mucous membrane lesions

    Roseola → B09

    • Billable, no subdivisions

Index main terms

  • Herpes, herpesvirus, herpetic → B00, B02 (61 entries)
  • Disease, diseased → B00, B02, B08 (17 entries)
  • Infection, infected, infective (opportunistic) → B00, B01, B02, B08, B09 (14 entries)
  • Keratitis (nodular) (nonulcerative) (simple) (zonular) → B00, B01, B02, B05, B09 (13 entries)
  • Encephalitis (chronic) (hemorrhagic) (idiopathic) (nonepidemic) (spurious) (subacute) → B00, B01, B02, B05, B06, B09 (10 entries)
  • Measles (black) (hemorrhagic) (suppressed) → B05 (8 entries)
  • Meningitis (basal) (basic) (brain) (cerebral) (cervical) (congestive) (diffuse) (hemorrhagic) (infantile) (membranous) (metastatic) (nonspecific) (pontine) (progressive) (simple) (spinal) (subacute) (sympathetic) (toxic) → B00, B01, B02, B05, B06 (8 entries)
  • Pneumonia (acute) (double) (migratory) (purulent) (septic) (unresolved) → B01, B05, B06 (7 entries)
  • Varicella → B01 (7 entries)
  • Exanthem, exanthema → B08, B09 (6 entries)
  • Otitis (acute) → B00, B02, B05 (6 entries)
  • Pharyngitis (acute) (catarrhal)(gangrenous) (infective) (malignant) (membranous) (phlegmonous) (pseudomembranous) (simple) (subacute) (suppurative) (ulcerative) → B00, B08 (6 entries)
  • Dermatitis (eczematous) → B00, B02, B08 (5 entries)
  • Iridocyclitis → B00, B02 (5 entries)
  • Myelitis (acute) (ascending) (childhood) (chronic) (descending) (diffuse) (disseminated) (idiopathic) (pressure) (progressive) (spinal cord) (subacute) → B00, B01, B02 (5 entries)

+78 more main terms; the search box finds them by word.

Block instructions

Notes that also apply

Chapter 1 instructions (Includes 1, Excludes2 5, Use additional code 1): printed on the chapter 1 page.