ICD-10-CM 2027 diagnosis code
T38Poisoning by, adverse effect of and underdosing of hormones and their synthetic substitutes and antagonists, not elsewhere classified
Not billable — use a more specific code
T38 is a header code, so it can't be reported by itself. Choose one of the 10 more specific codes beneath it.Short description: Hormones and their synthetic substitutes and antag, NEC
Code unchanged since ICD-10-CM took effect on October 1, 2015. Source: official FY2027 ICD-10-CM release from CDC/NCHS and CMS. Page updated September 29, 2026. About our data
About T38
T38 is the ICD-10-CM diagnosis code for poisoning by, adverse effect of and underdosing of hormones and their synthetic substitutes and antagonists, not elsewhere classified. It belongs to block T36-T50 (poisoning by, adverse effects of and underdosing of drugs, medicaments and biological substances) and chapter 19 (injury, poisoning and certain other consequences of external causes). It is a header code, so it can't be reported by itself; one of its 10 subcodes must be used instead.
To report this condition, pick the subcode that matches the documentation: T38.0 (analogues), T38.1 (substitutes), T38.2 (drugs), T38.3 (drugs), T38.4 (contraceptives), T38.5 (progestogens), T38.6 (classified), T38.7 (congeners) and 2 more.
Don't report T38 together with the conditions in its Excludes1 note: mineralocorticoids and their antagonists (T50.0-), oxytocic hormones (T48.0-) and parathyroid hormones and derivatives (T50.9-).
It has been part of ICD-10-CM since the code set took effect on October 1, 2015 and hasn't changed since.
Specific codes under T38
- T38.0Poisoning by, adverse effect of and underdosing of glucocorticoids and synthetic analogues
- T38.0XPoisoning by, adverse effect of and underdosing of glucocorticoids and synthetic analogues
- T38.0X1Poisoning by glucocorticoids and synthetic analogues, accidental (unintentional)
- T38.0X2Poisoning by glucocorticoids and synthetic analogues, intentional self-harm
- T38.0X3Poisoning by glucocorticoids and synthetic analogues, assault
- T38.0X4Poisoning by glucocorticoids and synthetic analogues, undetermined
- T38.0X5Adverse effect of glucocorticoids and synthetic analogues
- T38.0X6Underdosing of glucocorticoids and synthetic analogues
- T38.0XPoisoning by, adverse effect of and underdosing of glucocorticoids and synthetic analogues
- T38.1Poisoning by, adverse effect of and underdosing of thyroid hormones and substitutes
- T38.1XPoisoning by, adverse effect of and underdosing of thyroid hormones and substitutes
- T38.1X1Poisoning by thyroid hormones and substitutes, accidental (unintentional)
- T38.1X2Poisoning by thyroid hormones and substitutes, intentional self-harm
- T38.1X3Poisoning by thyroid hormones and substitutes, assault
- T38.1X4Poisoning by thyroid hormones and substitutes, undetermined
- T38.1X5Adverse effect of thyroid hormones and substitutes
- T38.1X6Underdosing of thyroid hormones and substitutes
- T38.1XPoisoning by, adverse effect of and underdosing of thyroid hormones and substitutes
- T38.2Poisoning by, adverse effect of and underdosing of antithyroid drugs
- T38.2XPoisoning by, adverse effect of and underdosing of antithyroid drugs
- T38.2X1Poisoning by antithyroid drugs, accidental (unintentional)
- T38.2X2Poisoning by antithyroid drugs, intentional self-harm
- T38.2X3Poisoning by antithyroid drugs, assault
- T38.2X4Poisoning by antithyroid drugs, undetermined
- T38.2X5Adverse effect of antithyroid drugs
- T38.2X6Underdosing of antithyroid drugs
- T38.2XPoisoning by, adverse effect of and underdosing of antithyroid drugs
- T38.3Poisoning by, adverse effect of and underdosing of insulin and oral hypoglycemic [antidiabetic] drugs
- T38.3XPoisoning by, adverse effect of and underdosing of insulin and oral hypoglycemic [antidiabetic] drugs
- T38.3X1Poisoning by insulin and oral hypoglycemic [antidiabetic] drugs, accidental (unintentional)
- T38.3X2Poisoning by insulin and oral hypoglycemic [antidiabetic] drugs, intentional self-harm
- T38.3X3Poisoning by insulin and oral hypoglycemic [antidiabetic] drugs, assault
- T38.3X4Poisoning by insulin and oral hypoglycemic [antidiabetic] drugs, undetermined
- T38.3X5Adverse effect of insulin and oral hypoglycemic [antidiabetic] drugs
- T38.3X6Underdosing of insulin and oral hypoglycemic [antidiabetic] drugs
- T38.3XPoisoning by, adverse effect of and underdosing of insulin and oral hypoglycemic [antidiabetic] drugs
- T38.4Poisoning by, adverse effect of and underdosing of oral contraceptives
- T38.4XPoisoning by, adverse effect of and underdosing of oral contraceptives
- T38.4X1Poisoning by oral contraceptives, accidental (unintentional)
- T38.4X2Poisoning by oral contraceptives, intentional self-harm
- T38.4X3Poisoning by oral contraceptives, assault
- T38.4X4Poisoning by oral contraceptives, undetermined
- T38.4X5Adverse effect of oral contraceptives
- T38.4X6Underdosing of oral contraceptives
- T38.4XPoisoning by, adverse effect of and underdosing of oral contraceptives
- T38.5Poisoning by, adverse effect of and underdosing of other estrogens and progestogens
- T38.5XPoisoning by, adverse effect of and underdosing of other estrogens and progestogens
- T38.5X1Poisoning by other estrogens and progestogens, accidental (unintentional)
- T38.5X2Poisoning by other estrogens and progestogens, intentional self-harm
- T38.5X3Poisoning by other estrogens and progestogens, assault
- T38.5X4Poisoning by other estrogens and progestogens, undetermined
- T38.5X5Adverse effect of other estrogens and progestogens
- T38.5X6Underdosing of other estrogens and progestogens
- T38.5XPoisoning by, adverse effect of and underdosing of other estrogens and progestogens
- T38.6Poisoning by, adverse effect of and underdosing of antigonadotrophins, antiestrogens, antiandrogens, not elsewhere classified
- T38.6XPoisoning by, adverse effect of and underdosing of antigonadotrophins, antiestrogens, antiandrogens, not elsewhere classified
- T38.6X1Poisoning by antigonadotrophins, antiestrogens, antiandrogens, not elsewhere classified, accidental (unintentional)
- T38.6X2Poisoning by antigonadotrophins, antiestrogens, antiandrogens, not elsewhere classified, intentional self-harm
- T38.6X3Poisoning by antigonadotrophins, antiestrogens, antiandrogens, not elsewhere classified, assault
- T38.6X4Poisoning by antigonadotrophins, antiestrogens, antiandrogens, not elsewhere classified, undetermined
- T38.6X5Adverse effect of antigonadotrophins, antiestrogens, antiandrogens, not elsewhere classified
- T38.6X6Underdosing of antigonadotrophins, antiestrogens, antiandrogens, not elsewhere classified
- T38.6XPoisoning by, adverse effect of and underdosing of antigonadotrophins, antiestrogens, antiandrogens, not elsewhere classified
- T38.7Poisoning by, adverse effect of and underdosing of androgens and anabolic congeners
- T38.7XPoisoning by, adverse effect of and underdosing of androgens and anabolic congeners
- T38.7X1Poisoning by androgens and anabolic congeners, accidental (unintentional)
- T38.7X2Poisoning by androgens and anabolic congeners, intentional self-harm
- T38.7X3Poisoning by androgens and anabolic congeners, assault
- T38.7X4Poisoning by androgens and anabolic congeners, undetermined
- T38.7X5Adverse effect of androgens and anabolic congeners
- T38.7X6Underdosing of androgens and anabolic congeners
- T38.7XPoisoning by, adverse effect of and underdosing of androgens and anabolic congeners
- T38.8Poisoning by, adverse effect of and underdosing of other and unspecified hormones and synthetic substitutes
- T38.80Poisoning by, adverse effect of and underdosing of unspecified hormones and synthetic substitutes
- T38.801Poisoning by unspecified hormones and synthetic substitutes, accidental (unintentional)
- T38.802Poisoning by unspecified hormones and synthetic substitutes, intentional self-harm
- T38.803Poisoning by unspecified hormones and synthetic substitutes, assault
- T38.804Poisoning by unspecified hormones and synthetic substitutes, undetermined
- T38.805Adverse effect of unspecified hormones and synthetic substitutes
- T38.806Underdosing of unspecified hormones and synthetic substitutes
- T38.81Poisoning by, adverse effect of and underdosing of anterior pituitary [adenohypophyseal] hormones
- T38.811Poisoning by anterior pituitary [adenohypophyseal] hormones, accidental (unintentional)
- T38.812Poisoning by anterior pituitary [adenohypophyseal] hormones, intentional self-harm
- T38.813Poisoning by anterior pituitary [adenohypophyseal] hormones, assault
- T38.814Poisoning by anterior pituitary [adenohypophyseal] hormones, undetermined
- T38.815Adverse effect of anterior pituitary [adenohypophyseal] hormones
- T38.816Underdosing of anterior pituitary [adenohypophyseal] hormones
- T38.89Poisoning by, adverse effect of and underdosing of other hormones and synthetic substitutes
- T38.891Poisoning by other hormones and synthetic substitutes, accidental (unintentional)
- T38.892Poisoning by other hormones and synthetic substitutes, intentional self-harm
- T38.893Poisoning by other hormones and synthetic substitutes, assault
- T38.894Poisoning by other hormones and synthetic substitutes, undetermined
- T38.895Adverse effect of other hormones and synthetic substitutes
- T38.896Underdosing of other hormones and synthetic substitutes
- T38.80Poisoning by, adverse effect of and underdosing of unspecified hormones and synthetic substitutes
- T38.9Poisoning by, adverse effect of and underdosing of other and unspecified hormone antagonists
- T38.90Poisoning by, adverse effect of and underdosing of unspecified hormone antagonists
- T38.901Poisoning by unspecified hormone antagonists, accidental (unintentional)
- T38.902Poisoning by unspecified hormone antagonists, intentional self-harm
- T38.903Poisoning by unspecified hormone antagonists, assault
- T38.904Poisoning by unspecified hormone antagonists, undetermined
- T38.905Adverse effect of unspecified hormone antagonists
- T38.906Underdosing of unspecified hormone antagonists
- T38.99Poisoning by, adverse effect of and underdosing of other hormone antagonists
- T38.991Poisoning by other hormone antagonists, accidental (unintentional)
- T38.992Poisoning by other hormone antagonists, intentional self-harm
- T38.993Poisoning by other hormone antagonists, assault
- T38.994Poisoning by other hormone antagonists, undetermined
- T38.995Adverse effect of other hormone antagonists
- T38.996Underdosing of other hormone antagonists
- T38.90Poisoning by, adverse effect of and underdosing of unspecified hormone antagonists
Coding notes
Notes that apply from higher levels
Instructions written at a parent level also apply to T38.
Code history
- 2016
- 2017
- 2018
- 2019
- 2020
- 2021
- 2022
- 2023
- 2024
- 2025
- 2026
- 2027
- FY2016 (effective 10/1/2015): Added (first year of ICD-10-CM)
- No changes since FY2016.
Common questions about T38
Is T38 billable?
- No. T38 is a header code. Report one of its more specific subcodes instead.