ICD-10 Code E09.00 – Drug or chemical induced diabetes mellitus with hyperosmolarity without nonketotic hyperglycemic-hyperosmolar coma (NKHHC) (2026): Diagnosis, Symptoms & Billing Guide
2026 ICD-10-CM Diagnosis Code E09.00 – Drug or chemical induced diabetes mellitus with hyperosmolarity without nonketotic hyperglycemic-hyperosmolar coma (NKHHC)
What it is
This code identifies diabetes caused by a drug or chemical exposure, with hyperosmolarity present but without documented nonketotic hyperglycemic-hyperosmolar coma. Use it when the record links the diabetes to the offending substance.
Clinical signs
Clinical features vary; refer to documentation. Typical charting may describe hyperglycemia with dehydration or altered mental status, but the key requirement is documented hyperosmolarity without coma.
When to use this code
Use E09.00 when the provider documents drug- or chemical-induced diabetes and specifically notes hyperosmolarity, but no coma. It is appropriate when the causal agent is identified or clearly linked in the assessment. Check documentation if the record only says diabetes or hyperglycemia without cause.
Do not use for
Do not use this code if the diabetes is not attributed to a drug or chemical. Also avoid it when coma is documented; that requires a different code.
Coding tip
Confirm both the induced cause and the absence of coma before assigning E09.00.