Table of Drugs and Chemicals: Substances Starting With Y ICD-10-CM
The letter Y section of the FY 2026 Table of Drugs and Chemicals covers 8 substance entries under 4 top-level substances. Each row carries up to six ICD-10-CM codes, one per intent column, and sub-entries are indented under their parent exactly as the printed CMS table nests them.
Table of Drugs and Chemicals: Y 8 entries
| Substance | Poisoning Accidental | Poisoning Self-harm | Poisoning Assault | Poisoning Undetermined | Adverse Effect | Underdosing |
|---|---|---|---|---|---|---|
| Yeast | T45.2X1 | T45.2X2 | T45.2X3 | T45.2X4 | T45.2X5 | T45.2X6 |
| dried | T45.2X1 | T45.2X2 | T45.2X3 | T45.2X4 | T45.2X5 | T45.2X6 |
| Yellow | T50.B91 | T50.B92 | T50.B93 | T50.B94 | T50.B95 | T50.B96 |
| fever vaccine | T50.B91 | T50.B92 | T50.B93 | T50.B94 | T50.B95 | T50.B96 |
| jasmine | T50.B91 | T50.B92 | T50.B93 | T50.B94 | T50.B95 | T50.B96 |
| phenolphthalein | T50.B91 | T50.B92 | T50.B93 | T50.B94 | T50.B95 | T50.B96 |
| Yew | T62.2X1 | T62.2X2 | T62.2X3 | T62.2X4 | – | – |
| Yohimbic acid | T40.991 | T40.992 | T40.993 | T40.994 | T40.995 | T40.996 |
Indented rows are sub-entries of the entry above them. The filter matches the full path, so typing a parent term finds its sub-entries too.
Questions About This Page
How do I read a row of this table?
Find the substance, then take the code from the column matching the documented intent. The codes are T-code stems; the code page adds the encounter 7th character (A, D, or S) and confirms billability.
Why do some substances have empty columns?
Not every substance has a code for every intent. An empty cell means the classification does not provide one, and the parent entry or the classification entries such as drug NEC apply.
Related References
Source: official CMS FY 2026 ICD-10-CM release, effective October 1, 2025 through September 30, 2026.
