Diagnostic code
244 — Endocrine Glands: Hypothyroidism - acquired
244 is an OHIP diagnostic code used on Ontario Health Insurance Plan claims. Endocrine Glands: Hypothyroidism - acquired.
- Code
- 244
- Description
- Endocrine Glands: Hypothyroidism - acquired
Updated October 26, 2026
244 is the OHIP diagnostic code for acquired hypothyroidism, an underactive thyroid that develops after birth.
Conditions billed under this code
- Hypothyroidism
What it covers
The Ministry lists 244 as 'Endocrine Glands: Hypothyroidism - acquired'. The wording was updated in March 2026 (INFOBulletin 260314).
Use it for an underactive thyroid, including hypothyroidism after thyroid surgery or radioactive iodine treatment.
Close neighbours: 243 congenital hypothyroidism, 245 thyroiditis such as Hashimoto's, 242 hyperthyroidism, 240 and 241 goitre, 226 benign thyroid adenoma, 193 thyroid cancer.
Related codes: 243, 245, 242, 241, 193
Sources
- OHIP Diagnostic Codes (Ministry of Health, February 2026)
- INFOBulletin 260314: New diagnostic codes and updated descriptions (March 2026)
APEX flags claims whose diagnostic code does not fit the service billed before they come back rejected. See how APEX works · Pricing