ICD-10-CM 2027
ICD-10 code for nodular goiter
From the official ICD-10-CM alphabetic index entry “Goiter (plunging) (substernal) › nodular (nontoxic) (due to)”. Page updated September 29, 2026.
About coding nodular goiter
The ICD-10-CM code for nodular goiter is E04.9 (Nontoxic goiter, unspecified). The official index lists 9 more specific codes, so check the documentation for details such as type, cause, site or severity before settling on E04.9.
Within E04, choose E04.9 (Nontoxic goiter, unspecified) only when documentation doesn't support a more specific option: nontoxic diffuse goiter (E04.0), nontoxic single thyroid nodule (E04.1), nontoxic multinodular goiter (E04.2) and other specified nontoxic goiter (E04.8).
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 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 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.
More specific nodular goiter codes (official index)
- with
- hyperthyroidism E05.20 — Thyrotoxicosis with toxic multinodular goiter without thyrotoxic crisis or storm
- with thyroid storm E05.21 — Thyrotoxicosis with toxic multinodular goiter with thyrotoxic crisis or storm
- thyrotoxicosis E05.20 — Thyrotoxicosis with toxic multinodular goiter without thyrotoxic crisis or storm
- with thyroid storm E05.21 — Thyrotoxicosis with toxic multinodular goiter with thyrotoxic crisis or storm
- endemic E01.1 — Iodine-deficiency related multinodular (endemic) goiter
- iodine-deficiency E01.1 — Iodine-deficiency related multinodular (endemic) goiter
- sporadic E04.9 — Nontoxic goiter, unspecified
- toxic E05.20 — Thyrotoxicosis with toxic multinodular goiter without thyrotoxic crisis or storm
- with thyroid storm E05.21 — Thyrotoxicosis with toxic multinodular goiter with thyrotoxic crisis or storm
Common questions about nodular goiter ICD-10 codes
What is the ICD-10 code for nodular goiter?
- E04.9 — Nontoxic goiter, unspecified. More specific codes apply when the documentation supports them: E05.20, E05.21, E05.20, E05.21 and others below.
What is the ICD-10 code for endemic nodular goiter?
- E01.1 — Iodine-deficiency related multinodular (endemic) goiter.
What is the ICD-10 code for iodine-deficiency nodular goiter?
- E01.1 — Iodine-deficiency related multinodular (endemic) goiter.
What is the ICD-10 code for sporadic nodular goiter?
- E04.9 — Nontoxic goiter, unspecified.
What is the ICD-10 code for toxic nodular goiter?
- E05.20 — Thyrotoxicosis with toxic multinodular goiter without thyrotoxic crisis or storm.
Is E04.9 billable?
- Yes. E04.9 is a billable/specific ICD-10-CM code valid for FY2027 (October 1, 2026 – September 30, 2027).
Can E04.9 be used as a principal diagnosis?
- Yes. The Medicare Code Editor doesn't restrict E04.9 as a principal diagnosis.
Is E04.9 a CC or MCC?
- No. E04.9 is neither a CC nor an MCC under MS-DRG v44.0.