Scarlet fever with other complications

This code signifies scarlet fever that has progressed beyond the typical rash and sore throat to involve other organ systems or manifest unusual sequelae. It indicates a more severe or complicated presentation of the Streptococcus pyogenes infection.

Apply this code when documentation specifies scarlet fever accompanied by complications such as acute glomerulonephritis, rheumatic fever, peritonsillar abscess, or mastoiditis. Ensure the medical record clearly links these complications to the scarlet fever diagnosis.

• Do not use this code for uncomplicated scarlet fever; refer to A38.0 or A38.9.
• Always code the specific complication(s) present in addition to this code, following ICD-10-CM sequencing guidelines.
• Ensure the provider's documentation explicitly states the complication is "due to" or "associated with" scarlet fever.