E03.5
E03.5: Myxedema coma
Billable / specific codeICD-10-CM
E03.5 is a billable, specific ICD-10-CM code for myxedema coma. It is valid for submission on a claim.
Check E03.5 with the rest of the claim: free scrubberRisk adjustment
E03.5 risk-adjusts. Under the CMS-HCC V28 model it maps to this category:
- HCC 202 Coma, Brain Compression/Anoxic Damage0.543 RAF
Coefficient shown for the Community Non-dual Aged segment. A higher HCC in the same hierarchy will suppress this one, so capturing it does not always add score. Look up the whole chart to see which of its HCCs the hierarchy would zero.
Medicare coverage
E03.5 is named in 11 Medicare coverage policies: 11 listing it as supporting medical necessity. Which one applies depends on your Medicare contractor.
- A56612Billing and Coding: CT of the Head
- A56645Billing and Coding: Controlled Substance Monitoring and Drugs of Abuse Testing
- A56773Billing and Coding: Neurophysiology Evoked Potentials (NEPs)
- A56781Billing and Coding: Transthoracic Echocardiography (TTE)
Alphabetic index entries that lead here
- Coma›myxedematous
- Myxedema›coma
Code history
Unchanged in every release from FY2024 to FY2027.