Loading...

    Explore
    • Policy Monitoring
    • Live Policy Feed
    • Billing Codes
    • NPI Medicare & Medicaid
    • Healthcare Providers
    • Health Insurance Payers
    • States
    • Service Lines
    • Taxonomy Codes
    Lookup tools
    • Billing Code Lookup
    • CPT Modifier Lookup
    • Provider Taxonomy Code Lookup
    • Healthcare Provider & Facility Lookup
    • Health Insurance Payer Lookup
    • Payer Contact Directory

    Policy & Benchmark Tools

    • Prior Authorization Lookup
    • Coverage Criteria Lookup
    • Timely Filing Lookup
    • Billing Code Reimbursement Rates
    • Payer Comparison Dashboard
    • Facility Comparison Dashboard
    • All tools

    Company

    • About OpenPayer
    • Data Sources
    • Trek Health
    OpenPayerby Trek Health
    LinkedInYouTube

    © 2026 Trek Health. All rights reserved.

    OpenPayer is built and maintained by Trek Health.

    v1.0.28
    OpenPayerBilling CodesToxic effects of substances chiefly nonmedicinal as to sourceICD-10-CM t61-toxic-seafood-exposure
    Ask Trek AI about this page

    ICD-10-CM Code For Toxic Effect Of Noxious Substances Eaten As Seafood: Group Overview

    The International Classification of Diseases, Tenth Revision, Clinical Modification (ICD-10-CM) code group T61 includes diagnoses for toxic effects resulting from ingestion of noxious substances present in seafood, such as shellfish and certain fish toxins, and covers acute poisoning and associated systemic manifestations. These ICD-10-CM diagnosis codes are used to document clinical encounters for seafood-related toxicity, capturing factors such as the type of toxin when known, severity of poisoning, and organ system involvement. Accurate coding within the ICD-10-CM T61 group supports proper claim adjudication, complete clinical documentation, and appropriate reimbursement.

    Customize your policy alerts

    Sign up for ICD-10-CM Code For Toxic Effect Of Noxious Substances Eaten As Seafood: Group Overview policy alerts

    Get alerted when relevant policies change without checking for updates manually.

    Monitor payer policy activity

    Receive email alerts as soon as relevant payer policies are published or updated.

    ICD-10-CM T61: Toxic Effect Of Noxious Substances Eaten As Seafood Overview

    This group represents toxic effects resulting from ingestion of contaminated or naturally toxic seafood, affecting multiple organ systems including gastrointestinal, neurologic, and cardiovascular systems. Accurate coding captures the specific substance exposure and clinical consequences, which supports complete clinical documentation and appropriate reimbursement. Precise codes also help characterize severity and guide public health reporting.

    Table of contents

    Progress1 / 6

    Explore openpayer tools

    • Billing CodesCPT, HCPCS, DRG & more
    • Reimbursement RatesCommercial vs. Medicare rate reports
    • ProvidersHospitals & facilities
    • PayersPlans & market footprint
    • Taxonomy CodesNUCC specialty codes
    • ModifiersCPT modifiers & usage
    • Prior AuthorizationPA policies by payer & drug
    • Timely FilingFiling deadlines by payer
    • Coverage CriteriaMedical necessity by payer
    • Payer ContactsClaims, PA & appeals contacts
    View all tools

    When to Use

    Use a code from this group when a patient presents with clinical findings attributable to ingestion of toxic seafood and the encounter documents the exposure and resulting toxic effects. Select codes that reflect known or suspected substance, severity, and any organ system complications described in the clinical record.

    ICD-10-CM Codes

    72 rows

    ICD-10-CM CodeDescription
    T61.01XACiguatera fish poisoning, accidental (unintentional), initial encounter
    T61.01XDCiguatera fish poisoning, accidental (unintentional), subsequent encounter
    T61.01XSCiguatera fish poisoning, accidental (unintentional), sequela
    T61.02XACiguatera fish poisoning, intentional self-harm, initial encounter
    T61.02XDCiguatera fish poisoning, intentional self-harm, subsequent encounter
    T61.02XSCiguatera fish poisoning, intentional self-harm, sequela
    T61.03XACiguatera fish poisoning, assault, initial encounter
    T61.03XDCiguatera fish poisoning, assault, subsequent encounter
    T61.03XSCiguatera fish poisoning, assault, sequela
    T61.04XACiguatera fish poisoning, undetermined, initial encounter
    T61.04XDCiguatera fish poisoning, undetermined, subsequent encounter
    T61.04XSCiguatera fish poisoning, undetermined, sequela
    T61.11XAScombroid fish poisoning, accidental (unintentional), initial encounter
    T61.11XDScombroid fish poisoning, accidental (unintentional), subsequent encounter
    T61.11XSScombroid fish poisoning, accidental (unintentional), sequela
    T61.12XAScombroid fish poisoning, intentional self-harm, initial encounter
    T61.12XDScombroid fish poisoning, intentional self-harm, subsequent encounter
    T61.12XSScombroid fish poisoning, intentional self-harm, sequela
    T61.13XAScombroid fish poisoning, assault, initial encounter
    T61.13XDScombroid fish poisoning, assault, subsequent encounter

    Showing 1–20 of 72

    DRG Codes

    6 rows

    DRG CodeDescription
    917Poisoning and Toxic Effects of Drugs with MCC
    918Poisoning and Toxic Effects of Drugs without MCC
    922Other Injury, Poisoning and Toxic Effect Diagnoses with MCC
    923Other Injury, Poisoning and Toxic Effect Diagnoses without MCC
    949Aftercare with CC/MCC
    950Aftercare without CC/MCC

    Typical Clinical Scenarios

    • An adult presents to the emergency department within an hour of eating improperly stored shellfish with sudden onset severe vomiting, watery diarrhea, abdominal cramps, and hypotension from fluid losses. ED staff provide resuscitation and symptomatic care for an acute toxic gastroenteritis caused by ingestion of contaminated seafood; a diagnosis from this group is assigned to capture the toxic effect of the seafood exposure and the encounter for initial treatment. Typical codes: T61.01XA, T61.01XD
    • An elderly nursing home resident develops progressive paresthesias, ataxia, and altered mental status over several days after repeatedly consuming large portions of reef fish known to carry ciguatoxin; the patient is admitted for neurologic evaluation and monitoring. Because the neurologic syndrome is attributable to chronic or subacute toxic exposure from eaten seafood and requires inpatient care, a code from this group is used to document the toxic effect as the cause of neurologic impairment. Typical codes: T61.13XA, T61.13XD
    • A young child arrives at clinic weeks after a near-fatal reaction to eaten shellfish that required intubation and ICU care; the child now has ongoing feeding intolerance and swallowing dysfunction related to the prior toxic injury. The prior toxic seafood exposure is documented as a complicating cause of the current sequelae and to explain the history of the critical care admission, so a post-encounter code from this group is assigned to link the sequela or follow-up to the initial toxic event. Typical codes: T61.01XS, T61.01XD

    Related Codes

    T51-TOXIC-EFFECT-OF-ALCOHOL

    ICD-10-CM Code For Toxic Effect Of Alcohol: Group Overview

    T52-TOXIC-EFFECT-OF-ORGANIC-SOLVENTS

    ICD-10-CM Code For Toxic Effect Of Organic Solvents: Group Overview

    T53-TOXIC-EFFECT-HALOGENATED-HYDROCARBONS

    ICD-10-CM Code For Toxic Effect Of Halogen Derivatives Of Aliphatic And Aromatic Hydrocarbons: Group Overview

    T54-TOXIC-EFFECT-OF-CORROSIVE-SUBSTANCES

    ICD-10-CM Code For Toxic Effect Of Corrosive Substances: Group Overview

    T55-TOXIC-EFFECT-OF-SOAPS-AND-DETERGENTS

    ICD-10-CM Code For Toxic Effect Of Soaps And Detergents: Group Overview

    T57-TOXIC-EFFECT-OTHER-INORGANICS

    ICD-10-CM Code For Toxic Effect Of Other Inorganic Substances: Group Overview

    T58-TOXIC-EFFECT-OF-CARBON-MONOXIDE

    ICD-10-CM Code For Toxic Effect Of Carbon Monoxide: Group Overview

    T59-TOXIC-EFFECT-OF-OTHER-GASES

    ICD-10-CM Code For Toxic Effect Of Other Gases Fumes And Vapors: Group Overview

    T60-TOXIC-EFFECT-OF-PESTICIDES

    ICD-10-CM Code For Toxic Effect Of Pesticides: Group Overview

    T62-TOXIC-EFFECT-EATEN-AS-FOOD

    ICD-10-CM Code For Toxic Effect Of Other Noxious Substances Eaten As Food: Group Overview

    Showing 1–10 of 13

    Frequently Asked Questions

    References

    1. 1.CPT® Codes and Descriptions. AAPC. Retrieved Aug 11, 2026.Maintains the CPT code set's official descriptions and guidelines, licensed from the American Medical Association, used as the definitional source for CPT codes on this page.
    2. 2.HCPCS Quarterly Update. Centers for Medicare & Medicaid Services (CMS). Retrieved Aug 11, 2026.CMS's quarterly release of HCPCS Level II codes and short/long descriptors, the source for HCPCS code definitions and update history.
    3. 3.ICD-10-CM Full Code List. Centers for Medicare & Medicaid Services (CMS). Retrieved Aug 11, 2026.CMS's complete ICD-10-CM diagnosis code list, used to cross-reference diagnosis codes associated with this procedure or service.
    Published by

    Trek Health powers OpenPayer with a leading commercial payer intelligence platform, seamlessly converting fragmented payer data into actionable insights for provider organizations.

    Trek Health ingests and normalizes Transparency in Coverage data and payer policy updates to give provider organizations a clear view of how commercial reimbursement behaves across markets, payers, and services. Our platform transforms raw payer disclosures into structured intelligence that supports contract evaluation, payer negotiations, and service line strategy. By combining market benchmarks with ongoing policy visibility, Trek helps teams identify variability, risk, and opportunity in commercial reimbursement. The result is faster insight, stronger negotiating positions, and more informed financial decisions.