E07.81
BillableSick-euthyroid syndrome
Last updated: FY2026 ICD-10-CM (Oct 1, 2025 – Sep 30, 2026) | CMS-HCC V28 (100% phase-in, PY2026)
Is E07.81 an HCC code?
No. E07.81 is a billable ICD-10-CM code but does not map to any HCC category in V28, V24, ESRD, or RxHCC.
This code does not map to an HCC category in any model (V28, V24, ESRD, RxHCC).
What This Code Means
E07.81 is the ICD-10-CM diagnosis code for sick-euthyroid syndrome. A condition where thyroid hormone levels appear normal despite systemic illness, reflecting altered thyroid hormone metabolism during acute or chronic disease. E07.81 sits in the ICD-10-CM chapter for endocrine, nutritional and metabolic diseases (e00-e89), within the section covering disorders of thyroid gland (e00-e07).
E07.81 is a billable ICD-10-CM code but does not map to a payment HCC under the CMS-HCC V28, V24, ESRD, or RxHCC risk adjustment models. It can be reported on Medicare Advantage encounter data submissions but it does not contribute to a beneficiary's RAF score and therefore does not affect risk-adjusted payments to the plan.
This diagnosis requires documentation of normal TSH and free T4 levels during acute illness.
HCC Buddy maintains structured V28 and V24 mapping, RAF weights, and MEAT documentation criteria for E07.81 sourced directly from the CMS-HCC risk adjustment model files and the CMS ICD-10-CM code set.
Coding Tips
- •This diagnosis requires documentation of normal TSH and free T4 levels during acute illness
- •Code the underlying systemic illness separately