ICD-10-CM T38: Poisoning by, adverse effect of and underdosing of hormones and their synthetic substitutes and antagonists, not elsewhere classified

ICD-10-CM Diagnosis Code (2025)

Official Description for T38

Poisoning by, adverse effect of and underdosing of hormones and their synthetic substitutes and antagonists, not elsewhere classified

Coding Notes & Guidelines for T38

Excludes1: Not Coded Here
  • mineralocorticoids and their antagonists (T50.0-)
  • oxytocic hormones (T48.0-)
  • parathyroid hormones and derivatives (T50.9-)
Excludes1: Not Coded Here

glucocorticoids, topically used (T49.-)

Inclusion Terms

Poisoning by glucocorticoids and synthetic analogues NOS

Inclusion Terms

Poisoning by thyroid hormones and substitutes NOS

Inclusion Terms

Poisoning by antithyroid drugs NOS

Inclusion Terms

Poisoning by insulin and oral hypoglycemic [antidiabetic] drugs NOS

Inclusion Terms

Poisoning by, adverse effect of and underdosing of multiple- and single-ingredient oral contraceptive preparations

Inclusion Terms

Poisoning by oral contraceptives NOS

Inclusion Terms

Poisoning by, adverse effect of and underdosing of estrogens and progestogens mixtures and substitutes

Inclusion Terms

Poisoning by other estrogens and progestogens NOS

Inclusion Terms

Poisoning by, adverse effect of and underdosing of tamoxifen

Inclusion Terms

Poisoning by antigonadotrophins, antiestrogens, antiandrogens, not elsewhere classified NOS

Inclusion Terms

Poisoning by androgens and anabolic congeners NOS

Inclusion Terms

Poisoning by unspecified hormones and synthetic substitutes NOS

Inclusion Terms

Poisoning by anterior pituitary [adenohypophyseal] hormones NOS

Inclusion Terms

Poisoning by other hormones and synthetic substitutes NOS

Inclusion Terms

Poisoning by unspecified hormone antagonists NOS

Inclusion Terms

Poisoning by other hormone antagonists NOS

7th Character Guidance

The appropriate 7th character is to be added to each code from category T38

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

Child Codes (More Specific Codes for T38):

T38.0 - Poisoning by, adverse effect of and underdosing of glucocorticoids and synthetic analogues T38.0X - Poisoning by, adverse effect of and underdosing of glucocorticoids and synthetic analogues T38.0X1 - Poisoning by glucocorticoids and synthetic analogues, accidental (unintentional) T38.0X2 - Poisoning by glucocorticoids and synthetic analogues, intentional self-harm T38.0X3 - Poisoning by glucocorticoids and synthetic analogues, assault T38.0X4 - Poisoning by glucocorticoids and synthetic analogues, undetermined T38.0X5 - Adverse effect of glucocorticoids and synthetic analogues T38.0X6 - Underdosing of glucocorticoids and synthetic analogues T38.1 - Poisoning by, adverse effect of and underdosing of thyroid hormones and substitutes T38.1X - Poisoning by, adverse effect of and underdosing of thyroid hormones and substitutes T38.1X1 - Poisoning by thyroid hormones and substitutes, accidental (unintentional) T38.1X2 - Poisoning by thyroid hormones and substitutes, intentional self-harm T38.1X3 - Poisoning by thyroid hormones and substitutes, assault T38.1X4 - Poisoning by thyroid hormones and substitutes, undetermined T38.1X5 - Adverse effect of thyroid hormones and substitutes T38.1X6 - Underdosing of thyroid hormones and substitutes T38.2 - Poisoning by, adverse effect of and underdosing of antithyroid drugs T38.2X - Poisoning by, adverse effect of and underdosing of antithyroid drugs T38.2X1 - Poisoning by antithyroid drugs, accidental (unintentional) T38.2X2 - Poisoning by antithyroid drugs, intentional self-harm T38.2X3 - Poisoning by antithyroid drugs, assault T38.2X4 - Poisoning by antithyroid drugs, undetermined T38.2X5 - Adverse effect of antithyroid drugs T38.2X6 - Underdosing of antithyroid drugs T38.3 - Poisoning by, adverse effect of and underdosing of insulin and oral hypoglycemic [antidiabetic] drugs T38.3X - Poisoning by, adverse effect of and underdosing of insulin and oral hypoglycemic [antidiabetic] drugs T38.3X1 - Poisoning by insulin and oral hypoglycemic [antidiabetic] drugs, accidental (unintentional) T38.3X2 - Poisoning by insulin and oral hypoglycemic [antidiabetic] drugs, intentional self-harm T38.3X3 - Poisoning by insulin and oral hypoglycemic [antidiabetic] drugs, assault T38.3X4 - Poisoning by insulin and oral hypoglycemic [antidiabetic] drugs, undetermined T38.3X5 - Adverse effect of insulin and oral hypoglycemic [antidiabetic] drugs T38.3X6 - Underdosing of insulin and oral hypoglycemic [antidiabetic] drugs T38.4 - Poisoning by, adverse effect of and underdosing of oral contraceptives T38.4X - Poisoning by, adverse effect of and underdosing of oral contraceptives T38.4X1 - Poisoning by oral contraceptives, accidental (unintentional) T38.4X2 - Poisoning by oral contraceptives, intentional self-harm T38.4X3 - Poisoning by oral contraceptives, assault T38.4X4 - Poisoning by oral contraceptives, undetermined T38.4X5 - Adverse effect of oral contraceptives T38.4X6 - Underdosing of oral contraceptives T38.5 - Poisoning by, adverse effect of and underdosing of other estrogens and progestogens T38.5X - Poisoning by, adverse effect of and underdosing of other estrogens and progestogens T38.5X1 - Poisoning by other estrogens and progestogens, accidental (unintentional) T38.5X2 - Poisoning by other estrogens and progestogens, intentional self-harm T38.5X3 - Poisoning by other estrogens and progestogens, assault T38.5X4 - Poisoning by other estrogens and progestogens, undetermined T38.5X5 - Adverse effect of other estrogens and progestogens T38.5X6 - Underdosing of other estrogens and progestogens T38.6 - Poisoning by, adverse effect of and underdosing of antigonadotrophins, antiestrogens, antiandrogens, not elsewhere classified T38.6X - Poisoning by, adverse effect of and underdosing of antigonadotrophins, antiestrogens, antiandrogens, not elsewhere classified T38.6X1 - Poisoning by antigonadotrophins, antiestrogens, antiandrogens, not elsewhere classified, accidental (unintentional) T38.6X2 - Poisoning by antigonadotrophins, antiestrogens, antiandrogens, not elsewhere classified, intentional self-harm T38.6X3 - Poisoning by antigonadotrophins, antiestrogens, antiandrogens, not elsewhere classified, assault T38.6X4 - Poisoning by antigonadotrophins, antiestrogens, antiandrogens, not elsewhere classified, undetermined T38.6X5 - Adverse effect of antigonadotrophins, antiestrogens, antiandrogens, not elsewhere classified T38.6X6 - Underdosing of antigonadotrophins, antiestrogens, antiandrogens, not elsewhere classified T38.7 - Poisoning by, adverse effect of and underdosing of androgens and anabolic congeners T38.7X - Poisoning by, adverse effect of and underdosing of androgens and anabolic congeners T38.7X1 - Poisoning by androgens and anabolic congeners, accidental (unintentional) T38.7X2 - Poisoning by androgens and anabolic congeners, intentional self-harm T38.7X3 - Poisoning by androgens and anabolic congeners, assault T38.7X4 - Poisoning by androgens and anabolic congeners, undetermined T38.7X5 - Adverse effect of androgens and anabolic congeners T38.7X6 - Underdosing of androgens and anabolic congeners T38.8 - Poisoning by, adverse effect of and underdosing of other and unspecified hormones and synthetic substitutes T38.80 - Poisoning by, adverse effect of and underdosing of unspecified hormones and synthetic substitutes T38.801 - Poisoning by unspecified hormones and synthetic substitutes, accidental (unintentional) T38.802 - Poisoning by unspecified hormones and synthetic substitutes, intentional self-harm T38.803 - Poisoning by unspecified hormones and synthetic substitutes, assault T38.804 - Poisoning by unspecified hormones and synthetic substitutes, undetermined T38.805 - Adverse effect of unspecified hormones and synthetic substitutes T38.806 - Underdosing of unspecified hormones and synthetic substitutes T38.81 - Poisoning by, adverse effect of and underdosing of anterior pituitary [adenohypophyseal] hormones T38.811 - Poisoning by anterior pituitary [adenohypophyseal] hormones, accidental (unintentional) T38.812 - Poisoning by anterior pituitary [adenohypophyseal] hormones, intentional self-harm T38.813 - Poisoning by anterior pituitary [adenohypophyseal] hormones, assault T38.814 - Poisoning by anterior pituitary [adenohypophyseal] hormones, undetermined T38.815 - Adverse effect of anterior pituitary [adenohypophyseal] hormones T38.816 - Underdosing of anterior pituitary [adenohypophyseal] hormones T38.89 - Poisoning by, adverse effect of and underdosing of other hormones and synthetic substitutes T38.891 - Poisoning by other hormones and synthetic substitutes, accidental (unintentional) T38.892 - Poisoning by other hormones and synthetic substitutes, intentional self-harm T38.893 - Poisoning by other hormones and synthetic substitutes, assault T38.894 - Poisoning by other hormones and synthetic substitutes, undetermined T38.895 - Adverse effect of other hormones and synthetic substitutes T38.896 - Underdosing of other hormones and synthetic substitutes T38.9 - Poisoning by, adverse effect of and underdosing of other and unspecified hormone antagonists T38.90 - Poisoning by, adverse effect of and underdosing of unspecified hormone antagonists T38.901 - Poisoning by unspecified hormone antagonists, accidental (unintentional) T38.902 - Poisoning by unspecified hormone antagonists, intentional self-harm T38.903 - Poisoning by unspecified hormone antagonists, assault T38.904 - Poisoning by unspecified hormone antagonists, undetermined T38.905 - Adverse effect of unspecified hormone antagonists T38.906 - Underdosing of unspecified hormone antagonists T38.99 - Poisoning by, adverse effect of and underdosing of other hormone antagonists T38.991 - Poisoning by other hormone antagonists, accidental (unintentional) T38.992 - Poisoning by other hormone antagonists, intentional self-harm T38.993 - Poisoning by other hormone antagonists, assault T38.994 - Poisoning by other hormone antagonists, undetermined T38.995 - Adverse effect of other hormone antagonists T38.996 - Underdosing of other hormone antagonists

About ICD-10-CM Code T38 (Poisoning by)

ICD-10-CM code T38 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 T38 became effective on October 1, 2024.

This page provides detailed information about T38 - Poisoning by, adverse effect of and underdosing of hormones and their synthetic substitutes and antagonists, not elsewhere classified. 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 hormones and their synthetic substitutes and antagonists, not elsewhere classified.