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 CodesPoisoning by, adverse effects of and underdosing of drugs, medicaments and biological substancesICD-10-CM t37-other-systemic-anti-infectives
    Ask Trek AI about this page

    ICD-10-CM Code For Poisoning By Other Systemic Anti Infectives And Antiparasitics: Group Overview

    The International Classification of Diseases, Tenth Revision, Clinical Modification (ICD-10-CM) code group T37 includes poisoning, adverse effects, and underdosing related to other systemic anti-infective and antiparasitic agents, covering toxic exposures, medication side effects, and inadequate dosing of these therapies. These ICD-10-CM diagnosis codes are used to document clinical scenarios such as drug-induced toxicity, allergic or idiosyncratic reactions, and therapeutic failure due to underdosing, capturing severity and organ system involvement where applicable. Accurate coding within the ICD-10-CM T37 group supports proper claim adjudication, complete clinical documentation, and appropriate reimbursement.

    Customize your policy alerts

    Sign up for ICD-10-CM Code For Poisoning By Other Systemic Anti Infectives And Antiparasitics: 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 T37: Poisoning By, Adverse Effect Of And Underdosing Of Other Systemic Anti-Infectives And Antiparasitics Overview

    The ICD-10-CM T37 group represents poisoning, adverse effects, and underdosing related to other systemic anti-infective and antiparasitic agents that act on infectious organisms. These diagnoses target systemic antimicrobial and antiparasitic therapies and the consequences when dosing is incorrect or when the agent causes toxic or adverse reactions. Accurate coding matters for reimbursement because it links clinical documentation to the reason for hospitalization or treatment complications and supports appropriate claim adjudication.

    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 documented poisoning, adverse reaction, or documented underdosing related to systemic anti-infective or antiparasitic therapy. Codes are selected based on the specific agent involved, the nature of the reaction or underdosing, and the clinical manifestations recorded in the medical record.

    ICD-10-CM Codes

    144 rows

    ICD-10-CM CodeDescription
    T37.0X1APoisoning by sulfonamides, accidental (unintentional), initial encounter
    T37.0X1DPoisoning by sulfonamides, accidental (unintentional), subsequent encounter
    T37.0X1SPoisoning by sulfonamides, accidental (unintentional), sequela
    T37.0X2APoisoning by sulfonamides, intentional self-harm, initial encounter
    T37.0X2DPoisoning by sulfonamides, intentional self-harm, subsequent encounter
    T37.0X2SPoisoning by sulfonamides, intentional self-harm, sequela
    T37.0X3APoisoning by sulfonamides, assault, initial encounter
    T37.0X3DPoisoning by sulfonamides, assault, subsequent encounter
    T37.0X3SPoisoning by sulfonamides, assault, sequela
    T37.0X4APoisoning by sulfonamides, undetermined, initial encounter
    T37.0X4DPoisoning by sulfonamides, undetermined, subsequent encounter
    T37.0X4SPoisoning by sulfonamides, undetermined, sequela
    T37.0X5AAdverse effect of sulfonamides, initial encounter
    T37.0X5DAdverse effect of sulfonamides, subsequent encounter
    T37.0X5SAdverse effect of sulfonamides, sequela
    T37.0X6AUnderdosing of sulfonamides, initial encounter
    T37.0X6DUnderdosing of sulfonamides, subsequent encounter
    T37.0X6SUnderdosing of sulfonamides, sequela
    T37.1X1APoisoning by antimycobacterial drugs, accidental (unintentional), initial encounter
    T37.1X1DPoisoning by antimycobacterial drugs, accidental (unintentional), subsequent encounter

    Showing 1–20 of 144

    • More pages

    DRG Codes

    9 rows

    DRG CodeDescription
    791Prematurity with Major Problems
    793Full Term Neonate with Major Problems
    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
    951Other Factors Influencing Health Status

    Typical Clinical Scenarios

    • An adult presents to the emergency department with acute gastrointestinal distress, fever, hypotension and signs of septic shock after accidental intravenous overdose of intravenous aminoglycoside given during hospital treatment for pneumonia; medication administration records confirm supratherapeutic dosing and the team documents poisoning due to an anti-infective. A code from this group is assigned because the encounter is for acute poisoning by a systemic anti-infective requiring immediate treatment and monitoring. Typical codes: T37.2X1A, T37.2X3A
    • An outpatient clinic follows a child with chronic cystic fibrosis who has developed sensorineural hearing loss and renal dysfunction attributed to prolonged therapeutic use (adverse effect) of aminoglycoside antibiotics; the family seeks specialty evaluation for the adverse effects related to prescribed therapy. A diagnosis from this group is used to capture the adverse effect of a systemic anti-infective as part of the patient’s problem list and for subspecialty care coordination. Typical codes: T37.2X5D, T37.2X6D
    • A hospitalized elderly patient on long-term prophylactic antimalarial therapy is admitted for breakthrough malaria infection after documented missed doses at a skilled nursing facility; clinicians document underdosing of the systemic antiparasitic contributing to the current infectious episode and arrange treatment escalation. This group’s underdosing codes are reported because the encounter addresses lack of therapeutic effect from underdosing of an antiparasitic agent. Typical codes: T37.2X2A, T37.2X4A

    Related Codes

    T36-POISONING-BY-SYSTEMIC-ANTIBIOTICS

    ICD-10-CM Code For Poisoning By, Adverse Effect Of And Underdosing Of Systemic Antibiotics: Group Overview

    T38-HORMONE-POISONING-AND-UNDERDOSING

    ICD-10-CM Code For Poisoning By Adverse Effect And Underdosing Of Hormones And Their Synthetic Substitutes And Antagonists Not Elsewhere Classified: Group Overview

    T39-NONOPIOID-ANALGESIC-POISONING

    ICD-10-CM Code For Poisoning By Nonopioid Analgesics Antipyretics And Antirheumatics: Group Overview

    T40-POISONING-BY-NARCOTICS-AND-HALLUCINOGENS

    ICD-10-CM Code For Poisoning By Narcotics And Psychodysleptics: Group Overview

    T41-ANESTHETICS-AND-THERAPEUTIC-GASES

    ICD-10-CM Code For Poisoning By Adverse Effect Of And Underdosing Of Anesthetics And Therapeutic Gases: Group Overview

    T42-ANTIEPILEPTIC-SEDATIVE-HYPNOTIC-ANTIPARKINSONISM-DRUGS

    ICD-10-CM Code For Poisoning By Antiepileptic Sedative Hypnotic And Antiparkinsonism Drugs: Group Overview

    T43-POISONING-AND-ADVERSE-EFFECTS-PSYCHOTROPIC

    ICD-10-CM Code For Poisoning By Adverse Effect Of And Underdosing Of Psychotropic Drugs Not Elsewhere Classified: Group Overview

    T44-AUTONOMIC-NERVOUS-SYSTEM-DRUG-EVENTS

    ICD-10-CM Code For Poisoning By Adverse Effect Of And Underdosing Of Drugs Primarily Affecting The Autonomic Nervous System: Group Overview

    T45-PRIMARILY-SYSTEMIC-AND-HEMATOLOGICAL-AGENTS

    ICD-10-CM Code For Poisoning By Adverse Effect And Underdosing Of Primarily Systemic And Hematological Agents Not Elsewhere Classified: Group Overview

    T46-POISONING-CARDIOVASCULAR-AGENTS

    ICD-10-CM Code For Poisoning By Adverse Effect Of And Underdosing Of Agents Primarily Affecting The Cardiovascular System: Group Overview

    Showing 1–10 of 14

    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.