ICD-10 Code E09.0 – Drug or chemical induced diabetes mellitus with hyperosmolarity (2026): Diagnosis, Symptoms & Billing Guide
2026 ICD-10-CM Diagnosis Code E09.0 – Drug or chemical induced diabetes mellitus with hyperosmolarity
What it is
This code identifies diabetes caused by a drug or chemical, with a hyperosmolar state. Use it when documentation links the diabetes to a medication or chemical exposure and notes hyperosmolarity.
Clinical signs
Clinical features vary; refer to documentation. Hyperosmolarity is typically described as severe dehydration, altered mental status, or marked hyperglycemia in the setting of drug-induced diabetes.
When to use this code
Use this code when the provider documents diabetes mellitus due to a drug or chemical and specifically states hyperosmolarity. It may appear in acute inpatient records, emergency care notes, or problem lists tied to a causal agent. If the record only says diabetes without the cause, check documentation.
Do not use for
Do not use this code for diabetes not linked to a drug or chemical, or for hyperosmolarity without documented drug-induced diabetes. If the causal agent or hyperosmolar state is unclear, check documentation.
Coding tip
Assign the external cause or adverse effect code(s) when documented, and verify the specific drug or chemical before finalizing the claim.