T47.91 ICD-10-CM Code: Poisoning by unspecified agents primarily affecting the gastrointestinal system, accidental (unintentional)
Billing Status: NO. This is a clinician non-billable / parent hierarchy grouping in the ICD-10-CM system.
Official Registry Overview & Definition
Official Tabular Instructional Notes
Sequencing, inclusion, and exclusion notes published for T47.91 in the official ICD-10-CM tabular list.
Includes
Conditions the official ICD-10-CM tabular list includes under this code.
- 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
Inclusion Terms
Alternative terms the tabular list files under this code.
- Poisoning by agents primarily affecting the gastrointestinal system NOS
Excludes1 — Not Coded Here
Conditions generally not reported together with this code (Excludes1) -- an error unless the two conditions are documented as unrelated to each other (ICD-10-CM Official Guidelines, Section I.A.12.a).
- toxic reaction to local anesthesia in pregnancy (O29.3-) Compare T47.91 vs 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) Compare T47.91 vs F10 →
- abuse of non-dependence-producing substances (F55.-) Compare T47.91 vs F55 →
- immunodeficiency due to drugs (D84.821) Compare T47.91 vs D84.821 →
- drug reaction and poisoning affecting newborn (P00-P96) Compare T47.91 vs P00 →
- pathological drug intoxication (inebriation) (F10-F19) Compare T47.91 vs F10 →
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-)
Change history
No changes recorded for this code — unchanged since the FY2016 baseline of the change ledger.
Verify Before Coding
- Not billable as written — a more specific code is required: T47.91XA, T47.91XD, T47.91XS.
- Requires a 7th character. "The appropriate 7th character is to be added to each code from category T47" Options: T47.91XA, T47.91XD, T47.91XS
From the code registry, the Medicare Code Editor, and the MS-DRG Definitions Manual. Check it against a full claim.
Frequently Asked Questions (FAQ) & Clinical Guidance
Can T47.91 be billed directly?
No. T47.91 (Poisoning by unspecified agents primarily affecting the gastrointestinal system, accidental (unintentional)) is a non-billable ICD-10-CM category code. A more specific billable subcode must be selected based on clinical documentation.
Does T47.91 require a 7th character?
Yes. The appropriate 7th character is to be added to each code from category T47.
Nearest Codes in This Family
Official ICD-10-CM classifications closest to T47.91 in its code family, with their registry titles.
- T47.8X6 — Underdosing of other agents primarily affecting gastrointestinal system
- T47.8X6A — Underdosing of other agents primarily affecting gastrointestinal system, initial encounter
- T47.8X6D — Underdosing of other agents primarily affecting gastrointestinal system, subsequent encounter
- T47.8X6S — Underdosing of other agents primarily affecting gastrointestinal system, sequela
- T47.9 — Poisoning by, adverse effect of and underdosing of unspecified agents primarily affecting the gastrointestinal system
- T47.91XA — Poisoning by unspecified agents primarily affecting the gastrointestinal system, accidental (unintentional), initial encounter
- T47.91XD — Poisoning by unspecified agents primarily affecting the gastrointestinal system, accidental (unintentional), subsequent encounter
- T47.91XS — Poisoning by unspecified agents primarily affecting the gastrointestinal system, accidental (unintentional), sequela
- T47.92 — Poisoning by unspecified agents primarily affecting the gastrointestinal system, intentional self-harm
- T47.92XA — Poisoning by unspecified agents primarily affecting the gastrointestinal system, intentional self-harm, initial encounter
Associated Substances (1)
Substances from the official ICD-10-CM Table of Drugs and Chemicals that map to this code.
- Gastrointestinal drug