DxCodebookFY2027 · Oct 1, 2026 – Sep 30, 2027

E02 diagnosis code · Billable category · FY2027

E02 Subclinical iodine-deficiency hypothyroidism

  • Billable
  • Not CC/MCC
  • POA reported

E02 ICD-10 code: a billable diagnosis code in FY2027; the category has no subdivisions.

Where it sits

  1. Chapter 4 Endocrine, nutritional and metabolic diseases (E00-E89)
  2. E00-E07 Disorders of thyroid gland (E00-E07)
  3. E02 Subclinical iodine-deficiency hypothyroidism
CC / MCC
Neither
MS-DRG
643-645
HCC V28
–
POA
Reported
Code Editor
–
Index entries
3

Instructions

Notes that also apply

Chapter 4 instructions (Notes 1, Excludes1 1): printed on the chapter 4 page.

Index entries

  • Hypothyroidism (acquired)subclinical, iodine-deficiency related → E02
  • Hypothyroidism (acquired)iodine-deficiency (acquired)subclinical → E02
  • Hypothyroidism (acquired)due toiodine-deficiency, acquiredsubclinical → E02

NCHS Alphabetic Index. Index first, then the Tabular List.

Medicare grouping and edits

CMS files for E02
CC / MCCNeither
Appendix BMDC 10 Endocrine, Nutritional and Metabolic Diseases and Disorders, MS-DRG 643-645 (Endocrine Disorders with MCC…)
Code Editor–
POAReported
HCC V28–

CMS: MS-DRG v44 (Appendix B, C), MCE v44, POA list FY2027, 2027 Initial ICD-10-CM Mappings. What the rows mean.

Hierarchy