Adverse effect of antineopl and immunosup drugs, sequela

This code signifies a long-term or residual condition resulting from a past adverse reaction to antineoplastic or immunosuppressive medications. These are lasting health problems that persist after the acute phase of the drug's negative effect has resolved.

Apply this code when documenting a chronic or permanent sequela directly attributable to a previous adverse effect of chemotherapy or immune-suppressing drugs. Examples include persistent neuropathy after vincristine, chronic kidney damage from cisplatin, or long-term bone marrow suppression following certain immunosuppressants.

• Always use this code as a secondary diagnosis, following the code for the specific sequela.
• Ensure documentation clearly links the current condition to a past adverse drug effect.
• Distinguish from current adverse effects (initial, subsequent) which use different 7th characters.