B97.21

Billable
ChapterA00–B99
Ranksubcategory
Official Description

SARS-associated coronavirus as the cause of diseases classified elsewhere

Metadata & Insights
  • •2026 ICD-10-CM Edition - Effective October 1, 2025.
  • •Billable/specific code (valid for reimbursement).
  • •Chapter 1: Certain Infectious and Parasitic Diseases (A00-B99).

Instructional Notes

Excludes1(Not coded here)
  • pneumonia due to SARS-associated coronavirus (J12.81)
General instructions are available for the parent sections:
View CH1 Notes

Clinical Hierarchy

CH1Certain infectious and parasitic diseases (A00-B99)
B95-B97Bacterial and viral infectious agents (B95-B97)
B97Viral agents as the cause of diseases classified elsewhere
B97.2Coronavirus as the cause of diseases classified elsewhere
B97.21SARS-associated coronavirus as the cause of diseases classified elsewhere

Applicable Ancestor Context

The following parent sections contain instructions or notes that apply to B97.21:

chapterCH1
Certain infectious and parasitic diseases (A00-B99)
View context instructions

Alphabetic Index Mentions

These are Diagnosis Index lookup paths that route to B97.21. Use them as entry terms for search, then confirm final coding instructions in the Tabular List and notes above.

3 raw paths
Coronavirus (infection)1 unique routes
SARS-associated→B97.21
Infection, infected, infective (opportunistic)2 unique routes
coronavirus NEC
severe acute respiratory syndrome (SARS associated)→B97.21
virus, viral NOS
as cause of disease classified elsewhere
coronavirus
SARS-associated→B97.21

MS-DRG Classification

2026 v43.1

This code is grouped within the following Diagnosis Related Group(s) for clinical reimbursement:

DRG 865
Viral Illness with MCC
DRG 866
Viral Illness without MCC

Cross Reference

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