ICD-10-CM T37: Poisoning by, adverse effect of and underdosing of other systemic anti-infectives and antiparasitics

ICD-10-CM Diagnosis Code (2025)

Official Description for T37

Poisoning by, adverse effect of and underdosing of other systemic anti-infectives and antiparasitics

Coding Notes & Guidelines for T37

Excludes1: Not Coded Here
  • anti-infectives topically used for ear, nose and throat (T49.6-)
  • anti-infectives topically used for eye (T49.5-)
  • locally applied anti-infectives NEC (T49.0-)
Excludes1: Not Coded Here
  • rifampicins (T36.6-)
  • streptomycin (T36.5-)
Excludes1: Not Coded Here

hydroxyquinoline derivatives (T37.8-)

Excludes1: Not Coded Here
  • amantadine (T42.8-)
  • cytarabine (T45.1-)
Excludes1: Not Coded Here

antimalarial drugs (T37.2-)

Inclusion Terms

Poisoning by sulfonamides NOS

Inclusion Terms

Poisoning by antimycobacterial drugs NOS

Inclusion Terms

Poisoning by antimalarials and drugs acting on other blood protozoa NOS

Inclusion Terms

Poisoning by other antiprotozoal drugs NOS

Inclusion Terms

Poisoning by anthelminthics NOS

Inclusion Terms

Poisoning by antiviral drugs NOS

Inclusion Terms

Poisoning by, adverse effect of and underdosing of hydroxyquinoline derivatives

Inclusion Terms

Poisoning by other specified systemic anti-infectives and antiparasitics NOS

Inclusion Terms

Poisoning by, adverse effect of and underdosing of systemic anti-infective and antiparasitics NOS

7th Character Guidance

The appropriate 7th character is to be added to each code from category T37

7th Character Definitions
  • A: initial encounter
  • D: subsequent encounter
  • S: sequela

Child Codes (More Specific Codes for T37):

T37.0 - Poisoning by, adverse effect of and underdosing of sulfonamides T37.0X - Poisoning by, adverse effect of and underdosing of sulfonamides T37.0X1 - Poisoning by sulfonamides, accidental (unintentional) T37.0X2 - Poisoning by sulfonamides, intentional self-harm T37.0X3 - Poisoning by sulfonamides, assault T37.0X4 - Poisoning by sulfonamides, undetermined T37.0X5 - Adverse effect of sulfonamides T37.0X6 - Underdosing of sulfonamides T37.1 - Poisoning by, adverse effect of and underdosing of antimycobacterial drugs T37.1X - Poisoning by, adverse effect of and underdosing of antimycobacterial drugs T37.1X1 - Poisoning by antimycobacterial drugs, accidental (unintentional) T37.1X2 - Poisoning by antimycobacterial drugs, intentional self-harm T37.1X3 - Poisoning by antimycobacterial drugs, assault T37.1X4 - Poisoning by antimycobacterial drugs, undetermined T37.1X5 - Adverse effect of antimycobacterial drugs T37.1X6 - Underdosing of antimycobacterial drugs T37.2 - Poisoning by, adverse effect of and underdosing of antimalarials and drugs acting on other blood protozoa T37.2X - Poisoning by, adverse effect of and underdosing of antimalarials and drugs acting on other blood protozoa T37.2X1 - Poisoning by antimalarials and drugs acting on other blood protozoa, accidental (unintentional) T37.2X2 - Poisoning by antimalarials and drugs acting on other blood protozoa, intentional self-harm T37.2X3 - Poisoning by antimalarials and drugs acting on other blood protozoa, assault T37.2X4 - Poisoning by antimalarials and drugs acting on other blood protozoa, undetermined T37.2X5 - Adverse effect of antimalarials and drugs acting on other blood protozoa T37.2X6 - Underdosing of antimalarials and drugs acting on other blood protozoa T37.3 - Poisoning by, adverse effect of and underdosing of other antiprotozoal drugs T37.3X - Poisoning by, adverse effect of and underdosing of other antiprotozoal drugs T37.3X1 - Poisoning by other antiprotozoal drugs, accidental (unintentional) T37.3X2 - Poisoning by other antiprotozoal drugs, intentional self-harm T37.3X3 - Poisoning by other antiprotozoal drugs, assault T37.3X4 - Poisoning by other antiprotozoal drugs, undetermined T37.3X5 - Adverse effect of other antiprotozoal drugs T37.3X6 - Underdosing of other antiprotozoal drugs T37.4 - Poisoning by, adverse effect of and underdosing of anthelminthics T37.4X - Poisoning by, adverse effect of and underdosing of anthelminthics T37.4X1 - Poisoning by anthelminthics, accidental (unintentional) T37.4X2 - Poisoning by anthelminthics, intentional self-harm T37.4X3 - Poisoning by anthelminthics, assault T37.4X4 - Poisoning by anthelminthics, undetermined T37.4X5 - Adverse effect of anthelminthics T37.4X6 - Underdosing of anthelminthics T37.5 - Poisoning by, adverse effect of and underdosing of antiviral drugs T37.5X - Poisoning by, adverse effect of and underdosing of antiviral drugs T37.5X1 - Poisoning by antiviral drugs, accidental (unintentional) T37.5X2 - Poisoning by antiviral drugs, intentional self-harm T37.5X3 - Poisoning by antiviral drugs, assault T37.5X4 - Poisoning by antiviral drugs, undetermined T37.5X5 - Adverse effect of antiviral drugs T37.5X6 - Underdosing of antiviral drugs T37.8 - Poisoning by, adverse effect of and underdosing of other specified systemic anti-infectives and antiparasitics T37.8X - Poisoning by, adverse effect of and underdosing of other specified systemic anti-infectives and antiparasitics T37.8X1 - Poisoning by other specified systemic anti-infectives and antiparasitics, accidental (unintentional) T37.8X2 - Poisoning by other specified systemic anti-infectives and antiparasitics, intentional self-harm T37.8X3 - Poisoning by other specified systemic anti-infectives and antiparasitics, assault T37.8X4 - Poisoning by other specified systemic anti-infectives and antiparasitics, undetermined T37.8X5 - Adverse effect of other specified systemic anti-infectives and antiparasitics T37.8X6 - Underdosing of other specified systemic anti-infectives and antiparasitics T37.9 - Poisoning by, adverse effect of and underdosing of unspecified systemic anti-infective and antiparasitics T37.91 - Poisoning by unspecified systemic anti-infective and antiparasitics, accidental (unintentional) T37.92 - Poisoning by unspecified systemic anti-infective and antiparasitics, intentional self-harm T37.93 - Poisoning by unspecified systemic anti-infective and antiparasitics, assault T37.94 - Poisoning by unspecified systemic anti-infective and antiparasitics, undetermined T37.95 - Adverse effect of unspecified systemic anti-infective and antiparasitic T37.96 - Underdosing of unspecified systemic anti-infectives and antiparasitics

About ICD-10-CM Code T37 (Poisoning by)

ICD-10-CM code T37 is a billable or specific ICD-10-CM code that can be used to indicate a diagnosis for reimbursement purposes. The 2025 edition of ICD-10-CM T37 became effective on October 1, 2024.

This page provides detailed information about T37 - Poisoning by, adverse effect of and underdosing of other systemic anti-infectives and antiparasitics. It includes common terminology, coding guidelines such as "Includes," "Excludes1," and "Excludes2" notes, and information on required 7th characters. Utilizing this information correctly is essential for accurate medical coding and claims submission for conditions like Poisoning by related to adverse effect of and underdosing of other systemic anti-infectives and antiparasitics.