ICD-10-CM · E03.9
ICD-10 E03.9: Hypothyroidism, unspecified
Hypothyroidism without specific etiology. Use E03.0-E03.8 when cause known.
Code
E03.9
Category
Endocrine, nutritional and metabolic diseases (E00-E89)
Clinical context
Hypothyroidism without specific etiology. Use E03.0-E03.8 when cause known.
Documentation requirements
- TSH (and free T4 if needed)
- Symptoms documented
Common related procedures
- 84443 TSH
- 84439 free T4
Common payer denial patterns
- Cytomel (T3) requires documented T4 monotherapy failure
Frequently asked questions
What does ICD-10 E03.9 mean?
Hypothyroidism, unspecified
When is this code documented?
Hypothyroidism without specific etiology. Use E03.0-E03.8 when cause known.
What documentation supports this code?
TSH (and free T4 if needed); Symptoms documented.
What are common denials associated with this diagnosis?
Cytomel (T3) requires documented T4 monotherapy failure.
Related diagnoses
- E03.1 — Congenital hypothyroidism
- E04.2 — Nontoxic multinodular goiter
- E05.90 — Thyrotoxicosis, unspecified without thyrotoxic crisis
- E08.65 — Diabetes due to underlying condition with hyperglycemia
- E10.9 — Type 1 diabetes mellitus without complications
- E11.21 — Type 2 diabetes mellitus with diabetic nephropathy
Sources
Catch E03.9 documentation gaps before claim submission
ApprovalHelp audits ICD-10 documentation against payer-specific PA criteria, flags missing modifiers, and pre-drafts appeals for high-denial codes. no setup fee.
Get started →Contact: hello@approvalhelp.com