AHA Coding Clinic® for ICD-10-CM and ICD-10-PCS - 2022 Issue 1; Ask the Editor

Type 1 Diabetic Hyperglycemic Hyperosmolar Syndrome

A patient is diagnosed with uncontrolled type I diabetes mellitus (DM), hyperglycemia, and acute hyperglycemic hyperosmolar syndrome (HHS). Both hyperglycemia and hyperosmolarity are respective subterms at the Index entry for Diabetes, type 2, under the subterm “with.” However, only hyperglycemia appears as a subterm at the Index entry for Diabetes, type 1, under the subterm “with.” What is the correct code assignment for uncontrolled Type 1 DM with HHS? ...

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