DxCodebookFY2027 · Oct 1, 2026 – Sep 30, 2027

Category · FY2027

A20 Plague

  • Header · not billable

A20 is not billable. The category heads 7 billable codes in FY2027: the 7 codes directly below it.

Index → code

Billable codes
7
Subdivisions
7
CC / MCC codes
0 / 7
HCC V28 codes
1
New FY2027
0
Index entries
21

Codes in A20

  1. A20.0
    Bubonic plague
    BillableMCC
  2. A20.1
    Cellulocutaneous plague
    BillableMCC
  3. A20.2
    Pneumonic plague
    BillableMCC
  4. A20.3
    Plague meningitis
    BillableMCC
  5. A20.7
    Septicemic plague
    BillableMCC2
  6. A20.8
    Other forms of plague
    BillableMCC
    Inclusion terms 3

    Inclusion terms

    • Abortive plague
    • Asymptomatic plague
    • Pestis minor
  7. A20.9
    Plague, unspecified
    BillableMCC

CC/MCC: as a secondary diagnosis, unless the principal diagnosis is on the code’s PDX exclusion list (MS-DRG v44 Appendix C; list on the code card).

Sources of each column.

Instructions

At A20

Includes

  • infection due to Yersinia pestis

Notes that also apply

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

Index entries

  • Bubonic plague → A20.0
  • Plague → A20.9
  • Plaguebubonic → A20.0
  • Plaguelymphatic gland → A20.0
  • Polyadenitismalignant → A20.0
  • Plaguecellulocutaneous → A20.1
  • Plaguecutaneobubonic → A20.1
  • Plaguepneumonic (primary) (secondary) → A20.2
  • Plaguepulmonary, pulmonic → A20.2
  • Meningitis (basal) (basic) (brain) (cerebral) (cervical) (congestive) (diffuse) (hemorrhagic) (infantile) (membranous) (metastatic) (nonspecific) (pontine) (progressive) (simple) (spinal) (subacute) (sympathetic) (toxic)Yersinia pestis → A20.3
  • Plaguemeningitis → A20.3
  • Plaguesepticemic → A20.7
  • Sepsis (generalized) (unspecified organism)Yersinia pestis → A20.7
  • Plagueabortive → A20.8
  • Plagueambulatory → A20.8
  • Plagueasymptomatic → A20.8
  • Plaguepharyngeal → A20.8
  • Plaguetonsillar → A20.8
  • Blackdeath → A20.9
  • Pneumonia (acute) (double) (migratory) (purulent) (septic) (unresolved)in (due to)Yersinia pestis → A20.2
  • Plaguetonsillarsepticemic → A20.7

NCHS Alphabetic Index. Index first, then the Tabular List.

Hierarchy