2027 ICD-10-CM Diagnosis Code D09.3Carcinoma in situ of thyroid and other endocrine glands
ICD-10-CM Codes›C00–D49›D00-D09›D09
- Billable — Valid for Submission
- Chronic Condition
D09.3 is a billable ICD-10-CM diagnosis code for carcinoma in situ of thyroid and other endocrine glands. It is valid on HIPAA claims for fiscal year 2027 (October 1, 2026 through September 30, 2027) and groups to MS-DRG 826 through 830, 843 through 845. In AHRQ's Clinical Classifications Software (CCSR), this diagnosis falls under Endocrine system cancers - thyroid.
Code Identity
Code Classification
Approximate SynonymsGuidance
Alternate terms and clinical phrases that map to this code.
- Carcinoma in situ of adrenal cortex
- Carcinoma in situ of adrenal gland
- Carcinoma in situ of adrenal medulla
- Carcinoma in situ of craniopharyngeal duct
- Carcinoma in situ of endocrine gland
- Carcinoma in situ of multiple endocrine glands
- Carcinoma in situ of parathyroid gland
- Carcinoma in situ of pineal gland
- Carcinoma in situ of pituitary gland
- Carcinoma in situ of thyroglossal duct
- Carcinoma in situ of thyroid gland
- Neoplasm of craniopharyngeal duct
- Neoplasm of thyroglossal duct
- Primary malignant neoplasm of thymus
- Primary squamous cell carcinoma of thymus
Instructional NotesGuidance
Instructions from the official ICD-10-CM Tabular List that apply to D09.3: its own notes plus those printed at D09, block D00-D09, and Chapter 2. A note printed at a category, block or chapter applies to every code under it.
Includes
Further defines, or gives examples of, the content of the category.
- Bowen's disease
- erythroplasia
- grade III intraepithelial neoplasia
- Queyrat's erythroplasia
Excludes1
Not coded here: the excluded code is never reported together with this one, unless the two conditions are unrelated.
Notes
General instructions on how these codes are used.
- Functional activity
- All neoplasms are classified in this chapter, whether they are functionally active or not. An additional code from Chapter 4 may be used, to identify functional activity associated with any neoplasm.
- Morphology [Histology]
- Chapter 2 classifies neoplasms primarily by site (topography), with broad groupings for behavior, malignant, in situ, benign, etc. The Table of Neoplasms should be used to identify the correct topography code. In a few cases, such as for malignant melanoma and certain neuroendocrine tumors, the morphology (histologic type) is included in the category and codes.
- Primary malignant neoplasms overlapping site boundaries
- A primary malignant neoplasm that overlaps two or more contiguous (next to each other) sites should be classified to the subcategory/code .8 ('overlapping lesion'), unless the combination is specifically indexed elsewhere. For multiple neoplasms of the same site that are not contiguous, such as tumors in different quadrants of the same breast, codes for each site should be assigned.
- Malignant neoplasm of ectopic tissue
- Malignant neoplasms of ectopic tissue are to be coded to the site mentioned, e.g., ectopic pancreatic malignant neoplasms are coded to pancreas, unspecified (C25.9).
Source: CMS ICD-10-CM Tabular List. How to read instructional notes.
Referenced in Other NotesGuidance
Instructional notes printed at other codes that name D09.3, its category, or a range that includes it.
Applicable To 1
These notes mention D09.3.
Clinical ClassificationClinical
AHRQ’s CCSR groups this code into broader clinical categories.
Table of NeoplasmsClinical
Anatomical sites in the Table of Neoplasms that reference this code family.
| Site | Malig. Primary | Malig. Secondary | Ca in situ | Benign | Uncertain | Unspec. |
|---|---|---|---|---|---|---|
| adrenal | C74.9 | C79.7 | D09.3 | D35.0 | D44.1 | D49.7 |
| adrenal › capsule | C74.9 | C79.7 | D09.3 | D35.0 | D44.1 | D49.7 |
| adrenal › cortex | C74.0 | C79.7 | D09.3 | D35.0 | D44.1 | D49.7 |
| adrenal › gland | C74.9 | C79.7 | D09.3 | D35.0 | D44.1 | D49.7 |
| adrenal › medulla | C74.1 | C79.7 | D09.3 | D35.0 | D44.1 | D49.7 |
| cortex › adrenal | C74.0 | C79.7 | D09.3 | D35.0 | D44.1 | D49.7 |
| craniobuccal pouch | C75.2 | C79.89 | D09.3 | D35.2 | D44.3 | D49.7 |
| craniopharyngeal (duct) (pouch) | C75.2 | C79.89 | D09.3 | D35.3 | D44.4 | D49.7 |
| endocrine gland NEC | C75.9 | C79.89 | D09.3 | D35.9 | D44.9 | D49.7 |
| endocrine gland NEC › pluriglandular | C75.8 | C79.89 | D09.3 | D35.7 | D44.9 | D49.7 |
| fossa (of) › pituitary | C75.1 | C79.89 | D09.3 | D35.2 | D44.3 | D49.7 |
| gland, glandular (lymphatic) (system) [See Also: Neoplasm, lymph gland] › endocrine NEC | C75.9 | C79.89 | D09.3 | D35.9 | D44.9 | D49.7 |
| hypophysis | C75.1 | C79.89 | D09.3 | D35.2 | D44.3 | D49.7 |
| intrasellar | C75.1 | C79.89 | D09.3 | D35.2 | D44.3 | D49.7 |
| medulla › adrenal | C74.1 | C79.7 | D09.3 | D35.0 | D44.1 | D49.7 |
| parathyroid (gland) | C75.0 | C79.89 | D09.3 | D35.1 | D44.2 | D49.7 |
| pineal (body) (gland) | C75.3 | C79.89 | D09.3 | D35.4 | D44.5 | D49.7 |
| pituitary (body) (fossa) (gland) (lobe) | C75.1 | C79.89 | D09.3 | D35.2 | D44.3 | D49.7 |
| pluriendocrine | C75.8 | C79.89 | D09.3 | D35.7 | D44.9 | D49.7 |
| Rathke's pouch | C75.1 | C79.89 | D09.3 | D35.2 | D44.3 | D49.7 |
| sella turcica | C75.1 | C79.89 | D09.3 | D35.2 | D44.3 | D49.7 |
| suprarenal | C74.9 | C79.7 | D09.3 | D35.0 | D44.1 | D49.7 |
| suprarenal › capsule | C74.9 | C79.7 | D09.3 | D35.0 | D44.1 | D49.7 |
| suprarenal › cortex | C74.0 | C79.7 | D09.3 | D35.0 | D44.1 | D49.7 |
| suprarenal › gland | C74.9 | C79.7 | D09.3 | D35.0 | D44.1 | D49.7 |
| suprarenal › medulla | C74.1 | C79.7 | D09.3 | D35.0 | D44.1 | D49.7 |
| thymus (gland) | C37 | C79.89 | D09.3 | D15.0 | D38.4 | D49.89 |
| thyroglossal duct | C73 | C79.89 | D09.3 | D34 | D44.0 | D49.7 |
| thyroid (gland) | C73 | C79.89 | D09.3 | D34 | D44.0 | D49.7 |
Patient EducationClinical
Thyroid Cancer
Thyroid cancer is a cancer that starts in the tissues of the thyroid. Your thyroid is a small, butterfly-shaped gland in the front of your neck. It makes hormones that control the way the body uses energy. These hormones affect nearly every organ in your body and control many of your body's most important functions.
The full article covers:
- What is thyroid cancer?
- What are the different types of thyroid cancer?
- Who is more likely to develop thyroid cancer?
- What are the symptoms of thyroid cancer?
- How is thyroid cancer diagnosed?
- What are the treatments for thyroid cancer?
Read the full article at MedlinePlus
Courtesy of MedlinePlus, a service of the U.S. National Library of Medicine.
Convert D09.3 to ICD-9-CMHistory
The closest ICD-9-CM equivalents under the General Equivalence Mappings.
Code HistoryHistory
Questions About D09.3Overview
What is the ICD-10 code for carcinoma in situ of thyroid and other endocrine glands?
The ICD-10-CM code for carcinoma in situ of thyroid and other endocrine glands is D09.3 (sometimes written as D093). It is billable on HIPAA-covered claims from October 1, 2026 through September 30, 2027.
Is D09.3 (Carcinoma in situ of other and unspecified sites) a billable code?
Yes. This is a billable ICD-10-CM code, specific enough to report carcinoma in situ of thyroid and other endocrine glands on HIPAA-covered claims from October 1, 2026 through September 30, 2027.
What MS-DRG does D09.3 group to?
When carcinoma in situ of thyroid and other endocrine glands is the principal diagnosis on an inpatient stay, it groups to MS-DRG 844, 827, 829, 843, 828, 826, 830, 845, with relative weights from 0.8443 to 4.7560 depending on complications. Higher weights mean higher Medicare reimbursement.
Can D09.3 be reported with D01.7?
Not as a rule. The Excludes1 note on D09.3 lists "carcinoma in situ of endocrine pancreas (D01.7)". An Excludes1 note means the excluded code is never reported together with this one; the only exception is when the two conditions are unrelated to each other (Official Guidelines, Section I.A.12.a).
What is the ICD-9 equivalent of D09.3?
Under the General Equivalence Mappings, carcinoma in situ of thyroid and other endocrine glands converts to ICD-9-CM 234.8 (ca in situ NEC). The mapping is approximate, so confirm the match fits the documentation.
