ICD-10 code T88. 7 for Unspecified adverse effect of drug or medicament is a medical classification as listed by WHO under the range - Injury, poisoning and certain other consequences of external causes .
When coding an adverse effect of a drug that has been correctly prescribed and properly administered, assign the appropriate code for the nature of the adverse effect followed by the appropriate code for the adverse effect of the drug (T36-T50).
891.
905A: Adverse effect of unspecified drugs, medicaments and biological substances, initial encounter.
Drug toxicity describes adverse effects of a drug that occur because the dose or plasma concentration has risen above the therapeutic range, either unintentionally or intentionally (drug overdose).
Listen to pronunciation. (AD-vers eh-FEKT) An unexpected medical problem that happens during treatment with a drug or other therapy. Adverse effects may be mild, moderate, or severe, and may be caused by something other than the drug or therapy being given.
2022 ICD-10-CM Diagnosis Code Z51. 81: Encounter for therapeutic drug level monitoring.
2: Neuralgia and neuritis, unspecified.
899: Other long term (current) drug therapy.
The ICD-10 section that covers long-term drug therapy is Z79, with many subsections and specific diagnosis codes.
For underdosing, assign the code from categories T36–T50 (fifth or sixth character "6").
89.29 or the diagnosis term “chronic pain syndrome” to utilize ICD-10 code G89. 4. If not documented, other symptom diagnosis codes may be utilized.