ICD-10-CM 2027
ICD-10 code for giant cell measles pneumonia
From the official ICD-10-CM alphabetic index entry “Pneumonia (acute) (double) (migratory) (purulent) (septic) (unresolved) › giant cell (measles)”. Page updated September 29, 2026.
About coding giant cell measles pneumonia
The ICD-10-CM code for giant cell measles pneumonia is B05.2 (Measles complicated by pneumonia).
Within B05 (measles), B05.2 is specifically for measles complicated by pneumonia. Related codes cover complicated by encephalitis (B05.0), complicated by meningitis (B05.1), complicated by otitis media (B05.3), with intestinal complications (B05.4), with other complications (B05.8) and without complication (B05.9).
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), DRG 179 (Respiratory Infections and Inflammations without CC/MCC, relative weight 0.7345), DRG 791 (Prematurity with Major Problems, relative weight 4.1075) and DRG 793 (Full Term Neonate with Major Problems, relative weight 4.2195), in MDC 04 (Diseases and Disorders of the Respiratory System) and MDC 15 (Newborns and Other Neonates with Conditions Originating in the Perinatal Period), 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 giant cell measles pneumonia ICD-10 codes
What is the ICD-10 code for giant cell measles pneumonia?
- B05.2 — Measles complicated by pneumonia.
Is B05.2 billable?
- Yes. B05.2 is a billable/specific ICD-10-CM code valid for FY2027 (October 1, 2026 – September 30, 2027).
Can B05.2 be used as a principal diagnosis?
- Yes. The Medicare Code Editor doesn't restrict B05.2 as a principal diagnosis.
Is B05.2 a CC or MCC?
- B05.2 is an MCC (major complication or comorbidity) under MS-DRG v44.0, unless excluded by the principal diagnosis.