E10.9

HCC Category Mapping

What This Code Means

Type 1 diabetes is a condition where the body cannot produce insulin, a hormone needed to control blood sugar levels. This code is used when a patient has Type 1 diabetes but does not currently have any serious complications like kidney disease, eye problems, or nerve damage.

Coding Tips

• •Use this code only when documentation confirms Type 1 diabetes with no documented complications; if any complications are present, use a more specific code from the E10.0-E10.8 range
• •Always verify the diabetes type in the medical record, as Type 1 (E10) is distinctly different from Type 2 (E11) and requires different coding

Clinical Significance

Type 1 diabetes mellitus without complications is used for patients with insulin-dependent diabetes who have no documented end-organ damage or other diabetic complications. Type 1 diabetes is an autoimmune condition requiring lifelong exogenous insulin therapy, and even without complications, these patients require ongoing monitoring for retinopathy, nephropathy, neuropathy, and cardiovascular disease to prevent future complications.

Documentation Requirements

• ✓Documentation must confirm Type 1 diabetes (not Type 2 or other forms) and explicitly state or imply no current complications.
• ✓The medical record should reflect that standard diabetic screening (eye exam, kidney function, foot exam) has been performed or ordered.
• ✓If any complications are identified during the encounter, a more specific complication code should be used instead.

Commonly Confused Codes