E06.1 — Subacute thyroiditis
Is E06.1 billable?
Yes — E06.1 is billable for FY2027. E06.1 is a valid, billable ICD-10-CM code at the highest level of specificity in its branch. E06.1 may be submitted for encounters from October 1, 2026 through September 30, 2027.
E06.1 at a glance
| Code | E06.1 |
|---|---|
| Description | Subacute thyroiditis |
| Billable | Yes |
| Code set | ICD-10-CM FY2027 |
| Valid for encounters | October 1, 2026 – September 30, 2027 |
Which MS-DRGs does E06.1 group to?
E06.1 sits in MDC Pre and helps define the logic of 3 MS-DRGs (version 44, FY2027). Which one a stay actually groups to also depends on procedures and secondary diagnoses.
- 011Tracheostomy for Face, Mouth and Neck Diagnoses or Laryngectomy with MCCsurgical
- 012Tracheostomy for Face, Mouth and Neck Diagnoses or Laryngectomy with CCsurgical
- 013Tracheostomy for Face, Mouth and Neck Diagnoses or Laryngectomy without CC/MCCsurgical
How is E06.1 listed in the Alphabetic Index?
These are the routes through the Alphabetic Index that lead to E06.1. They show the wording a clinician may have documented, which often differs from the Tabular description.
- De Quervain's › thyroiditis
- Quervain's disease › thyroid
- Thyroiditis › de Quervain's
- Thyroiditis › giant-cell
- Thyroiditis › granulomatous
- Thyroiditis › nonsuppurative
- Thyroiditis › pseudotuberculous
- Thyroiditis › subacute
- Thyroiditis › viral
- Disease, diseased › de Quervain's › thyroid
Excludes1 — never code together
The conditions below can never be reported together with E06.1 on the same claim. An Excludes1 note means the two conditions cannot occur in the same patient, so reporting both is a coding error.
- autoimmune thyroiditis (E06.3)
Inclusion terms
Alternative wording in documentation that is classified to E06.1.
- de Quervain thyroiditis
- Giant-cell thyroiditis
- Granulomatous thyroiditis
- Nonsuppurative thyroiditis
- Viral thyroiditis
Excludes1 — never code together — inherited from Chapter 4
The conditions below can never be reported together with E06.1 on the same claim. An Excludes1 note means the two conditions cannot occur in the same patient, so reporting both is a coding error.
- transitory endocrine and metabolic disorders specific to newborn (P70-P74)
Excludes1 — never code together — inherited from E06
The conditions below can never be reported together with E06.1 on the same claim. An Excludes1 note means the two conditions cannot occur in the same patient, so reporting both is a coding error.
- postpartum thyroiditis (O90.5)
How long has E06.1 existed?
E06.1 has been in ICD-10-CM since at least FY2016, the earliest fiscal year on record here.
Derived from the official order files for FY2016–FY2026. FY2017 and FY2020 publish no order file, so those years are not covered.
Which codes are confused with E06.1?
ICD-10-CM declares these codes mutually exclusive with E06.1 — exactly one of each pair can be correct for a given encounter.