T49.0X ICD-10-CM Code: Poisoning by, adverse effect of and underdosing of local antifungal, anti-infective and anti-inflammatory drugs
Billing Status: NO. This is a clinician non-billable / parent hierarchy grouping in the ICD-10-CM system.
Code Set: Valid FY2026 and FY2027. FY2026 took effect October 1, 2025.
Official Registry Overview & Definition
Official Tabular Instructional Notes
Sequencing, inclusion, and exclusion notes published for T49.0X in the official ICD-10-CM tabular list.
Includes
Conditions the official ICD-10-CM tabular list includes under this code.
- poisoning by, adverse effect of and underdosing of glucocorticoids, topically used
- adverse effect of correct substance properly administered
- poisoning by overdose of substance
- poisoning by wrong substance given or taken in error
- underdosing by (inadvertently) (deliberately) taking less substance than prescribed or instructed
Excludes1 — Not Coded Here
Conditions that can never be reported with this code; the two are mutually exclusive.
- toxic reaction to local anesthesia in pregnancy (O29.3-)
Excludes2 — Not Included Here
Conditions not covered by this code, but which may be reported alongside it when both are present.
- abuse and dependence of psychoactive substances (F10-F19)
- abuse of non-dependence-producing substances (F55.-)
- immunodeficiency due to drugs (D84.821)
- drug reaction and poisoning affecting newborn (P00-P96)
- pathological drug intoxication (inebriation) (F10-F19)
Code First
Underlying conditions that must be sequenced before this code.
- Code first, for adverse effects, the nature of the adverse effect, such as:
- adverse effect NOS (T88.7)
- aspirin gastritis (K29.-)
- blood disorders (D56-D76)
- contact dermatitis (L23-L25)
- dermatitis due to substances taken internally (L27.-)
- nephropathy (N14.0-N14.2)
Use Additional Code
Supplementary codes the tabular list directs you to add.
- Use additional code(s) to specify:
- manifestations of poisoning
- underdosing or failure in dosage during medical and surgical care (Y63.6, Y63.8-Y63.9)
- underdosing of medication regimen (Z91.12-, Z91.13-)
Frequently Asked Questions (FAQ) & Clinical Guidance
Can T49.0X be billed directly?
No. T49.0X (Poisoning by, adverse effect of and underdosing of local antifungal, anti-infective and anti-inflammatory drugs) is a non-billable ICD-10-CM category code. A more specific billable subcode must be selected based on clinical documentation.
Does T49.0X require a 7th character?
Yes. The appropriate 7th character is to be added to each code from category T49.
Nearest Codes in This Family
Official ICD-10-CM classifications closest to T49.0X in its code family, with their registry titles.
- T49 — Poisoning by, adverse effect of and underdosing of topical agents primarily affecting skin and mucous membrane and by ophthalmological, otorhinorlaryngological and dental drugs
- T49.0 — Poisoning by, adverse effect of and underdosing of local antifungal, anti-infective and anti-inflammatory drugs
- T49.0X1 — Poisoning by local antifungal, anti-infective and anti-inflammatory drugs, accidental (unintentional)
- T49.0X1A — Poisoning by local antifungal, anti-infective and anti-inflammatory drugs, accidental (unintentional), initial encounter
- T49.0X1D — Poisoning by local antifungal, anti-infective and anti-inflammatory drugs, accidental (unintentional), subsequent encounter
- T49.0X1S — Poisoning by local antifungal, anti-infective and anti-inflammatory drugs, accidental (unintentional), sequela
- T49.0X2 — Poisoning by local antifungal, anti-infective and anti-inflammatory drugs, intentional self-harm
- T49.0X2A — Poisoning by local antifungal, anti-infective and anti-inflammatory drugs, intentional self-harm, initial encounter
- T49.0X2D — Poisoning by local antifungal, anti-infective and anti-inflammatory drugs, intentional self-harm, subsequent encounter
- T49.0X2S — Poisoning by local antifungal, anti-infective and anti-inflammatory drugs, intentional self-harm, sequela