ICD-10-CM 2027
ICD-10 code for Lymphomatous thyroiditis
From the official ICD-10-CM alphabetic index entry “Thyroiditis › lymphomatous”. Page updated September 29, 2026.
About coding Lymphomatous thyroiditis
The ICD-10-CM code for Lymphomatous thyroiditis is E06.3 (Autoimmune thyroiditis).
Within E06 (thyroiditis), E06.3 is specifically for autoimmune thyroiditis. Related codes cover acute thyroiditis (E06.0), subacute thyroiditis (E06.1), chronic thyroiditis with transient thyrotoxicosis (E06.2), drug-induced thyroiditis (E06.4), other chronic thyroiditis (E06.5) and unspecified (E06.9).
It is not a CC or MCC, so as a secondary diagnosis it doesn't change the MS-DRG severity level.
In MS-DRG v44.0, it is part of the grouping logic for DRG 011 (Tracheostomy for Face, Mouth and Neck Diagnoses or Laryngectomy with MCC, relative weight 5.6154), DRG 012 (Tracheostomy for Face, Mouth and Neck Diagnoses or Laryngectomy with CC, relative weight 4.381), DRG 013 (Tracheostomy for Face, Mouth and Neck Diagnoses or Laryngectomy without CC/MCC, relative weight 2.7307), DRG 643 (Endocrine Disorders with MCC, relative weight 1.6139), DRG 644 (Endocrine Disorders with CC, relative weight 1.0044) and DRG 645 (Endocrine Disorders without CC/MCC, relative weight 0.7459), in Pre-MDC and MDC 10 (Endocrine, Nutritional and Metabolic Diseases and Disorders), as a principal or secondary diagnosis. The DRG a claim lands in depends on the principal diagnosis, procedures and any CC/MCC secondary diagnoses.
Common questions about Lymphomatous thyroiditis ICD-10 codes
What is the ICD-10 code for Lymphomatous thyroiditis?
- E06.3 — Autoimmune thyroiditis.
Is E06.3 billable?
- Yes. E06.3 is a billable/specific ICD-10-CM code valid for FY2027 (October 1, 2026 – September 30, 2027).
Can E06.3 be used as a principal diagnosis?
- Yes. The Medicare Code Editor doesn't restrict E06.3 as a principal diagnosis.
Is E06.3 a CC or MCC?
- No. E06.3 is neither a CC nor an MCC under MS-DRG v44.0.