Adverse effect of systemic anti-infect/parasit, sequela

This code signifies a long-term or residual adverse effect resulting from a systemic anti-infective or antiparasitic medication not otherwise specified. It indicates that the initial acute reaction has resolved, but a lasting health problem or condition persists due to the drug. This could include chronic organ damage, persistent neurological deficits, or other enduring sequelae.

Apply this code when documentation clearly links a current, ongoing health issue to a past adverse reaction from a systemic anti-infective or antiparasitic drug. This is appropriate for conditions that are no longer acute but represent a permanent or long-standing consequence of the drug's effect. Examples include chronic kidney disease following nephrotoxic antibiotics or persistent neuropathy after certain antiparasitics.

• Ensure the medical record explicitly states the adverse effect is a "sequela" or "residual" and directly links it to the specified drug class.
• Always code the specific nature of the sequela first (e.g., chronic kidney disease, peripheral neuropathy), followed by this code.
• Verify the drug involved is a systemic anti-infective or antiparasitic and not a vaccine, serum, or other biological substance.