Streptococcus, group A, causing diseases classd elswhr

This code identifies Group A Streptococcus (GAS) as the causative agent for an infection that is primarily classified under another ICD-10-CM code. It indicates a bacterial infection by Streptococcus pyogenes that is responsible for a disease process documented elsewhere in the medical record.

Apply this code as an additional diagnosis when documentation specifies a Group A Streptococcus infection as the etiology of a condition, such as pharyngitis, impetigo, cellulitis, or rheumatic fever. This code is used to provide specificity regarding the infectious organism when the primary disease code does not inherently include this information.

• Always sequence this code after the code for the specific disease caused by the Group A Streptococcus.
• Ensure documentation explicitly states "Group A Streptococcus" or "GAS" as the causative organism.
• Do not use this code if the primary disease code already specifies Group A Streptococcus as the etiology (e.g., J02.0 for Streptococcal pharyngitis).