ICD-10-CM 2027
ICD-10 code for pneumonic plague
From the official ICD-10-CM alphabetic index entry “Plague › pneumonic (primary) (secondary)”. Page updated September 29, 2026.
About coding pneumonic plague
The ICD-10-CM code for pneumonic plague is A20.2 (Pneumonic plague).
Within A20 (plague), A20.2 is specifically for pneumonic plague. Related codes cover Bubonic plague (A20.0), Cellulocutaneous plague (A20.1), meningitis (A20.3), Septicemic plague (A20.7), other forms of plague (A20.8) and unspecified (A20.9).
As a secondary diagnosis it is an MCC (major complication or comorbidity), which can move an inpatient stay into the highest-paying "with MCC" MS-DRG of its family, unless the principal diagnosis excludes it.
In MS-DRG v44.0, it is part of the grouping logic for DRG 177 (Respiratory Infections and Inflammations with MCC, relative weight 1.6092), DRG 178 (Respiratory Infections and Inflammations with CC, relative weight 0.9744) and DRG 179 (Respiratory Infections and Inflammations without CC/MCC, relative weight 0.7345), in MDC 04 (Diseases and Disorders of the Respiratory System), as a principal or secondary diagnosis. The DRG a claim lands in depends on the principal diagnosis, procedures and any CC/MCC secondary diagnoses.
Common questions about pneumonic plague ICD-10 codes
What is the ICD-10 code for pneumonic plague?
- A20.2 — Pneumonic plague.
Is A20.2 billable?
- Yes. A20.2 is a billable/specific ICD-10-CM code valid for FY2027 (October 1, 2026 – September 30, 2027).
Can A20.2 be used as a principal diagnosis?
- Yes. The Medicare Code Editor doesn't restrict A20.2 as a principal diagnosis.
Is A20.2 a CC or MCC?
- A20.2 is an MCC (major complication or comorbidity) under MS-DRG v44.0, unless excluded by the principal diagnosis.