E02 ICD-10-CA code: Subclinical iodine-deficiency hypothyroidism
E02 is the ICD-10-CA code for “Subclinical iodine-deficiency hypothyroidism” in CIHI’s FY 2026–2027 release, in effect from Apr 1, 2026.
Official description
E02Subclinical iodine-deficiency hypothyroidism
Short description: Subclinical iodine-def hypothyroidism
ICD-10-CA · Canada
Index terms
Entries in CIHI’s alphabetical index that lead to E02. Searching the index by the condition the note names is how coders reach this code.
- Hypothyroidism (acquired), subclinical, iodine deficiency related
- Hypothyroidism (acquired), iodine deficiency (acquired) NEC, subclinical
- Hypothyroidism (acquired), due to, iodine deficiency (acquired) NEC, subclinical
Notes for E02
As CIHI prints them, with any note E02 takes from the headings above it.
Excludes
Conditions classified elsewhere.
- Complications of pregnancy, childbirth and the puerperium (O00-O99)symptoms, signs and abnormal clinical and laboratory findings, not elsewhere classified (R00-R99)transitory endocrine and metabolic disorders specific to fetus and newborn (P70-P74)From Chapter 4: Endocrine, nutritional and metabolic diseases (E00-E90)
Note
- All neoplasms, whether functionally active or not, are classified in Chapter II. Appropriate codes in this chapter (i.e. E05.8)(E07.0) (E16-E31)(E34.-) may be used, if desired, as additional codes to indicate either functional activity by neoplasms and ectopic endocrine tissue or hyperfunction and hypofunction of endocrine glands associated with neoplasms and other conditions classified elsewhere.From Chapter 4: Endocrine, nutritional and metabolic diseases (E00-E90)
Where E02 sits
- 1ChapterChapter 4: Endocrine, nutritional and metabolic diseases (E00-E90)
- 2Block E00-E07Disorders of thyroid gland
- 3Valid code E02Subclinical iodine-deficiency hypothyroidism
Source and release
- Data release
- ICD-10-CA · FY 2026–2027
- Effective date
- Apr 1, 2026
- Publisher
- CIHI
This page is built from the ICD-10-CA catalog that Vero Codes reads when it suggests codes: Canadian Institute for Health Information’s FY 2026–2027 release, imported from the publisher’s file and checked against it. The description, notes and structured data come from the same record.
Frequently asked questions
What does ICD-10-CA code E02 mean?
E02 is the ICD-10-CA code for “Subclinical iodine-deficiency hypothyroidism” in CIHI’s ICD-10-CA FY 2026–2027 release.
Where is E02 in ICD-10-CA?
E02 sits under E00-E07 Disorders of thyroid gland, within Chapter 4: Endocrine, nutritional and metabolic diseases (E00-E90).
What coding notes apply to E02?
ICD-10-CA lists Note, Excludes notes for E02, including those from the headings it sits under. They are listed on this page with where each one comes from.
Which ICD-10-CA release does this page use?
It uses CIHI’s FY 2026–2027 release, in effect from Apr 1, 2026 to Mar 31, 2027. It is a reference: confirm the code against the current list and the payer’s rules before you submit it.