2026 ICD-10-CM Diagnosis Code D00.03Carcinoma in situ of gingiva and edentulous alveolar ridge
ICD-10-CM Codes›C00–D49›D00-D09›D00
- Billable — Valid for Submission
- Chronic Condition
D00.03 is a billable ICD-10-CM diagnosis code for carcinoma in situ of gingiva and edentulous alveolar ridge. It is valid on HIPAA claims for fiscal year 2026 (October 1, 2025 through September 30, 2026) and groups to MS-DRG 11 through 13, 146 through 148. Coders also document this condition as carcinoma in situ of alveolar ridge mucosa. In AHRQ's Clinical Classifications Software (CCSR), this diagnosis falls under Head and neck cancers - lip and oral cavity.
Code Identity
Code Classification
Approximate SynonymsGuidance
Alternate terms and clinical phrases that map to this code.
- Carcinoma in situ of alveolar ridge mucosa
- Carcinoma in situ of gingival mucosa
- Carcinoma in situ of gum
- Carcinoma in situ of lower gum
- Carcinoma in situ of upper gum
- Neoplasm of alveolar ridge mucosa
- Neoplasm of lower gum
- Neoplasm of upper gum
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. |
|---|---|---|---|---|---|---|
| alveolar | C03.9 | C79.89 | D00.03 | D10.39 | D37.09 | D49.0 |
| alveolar › mucosa | C03.9 | C79.89 | D00.03 | D10.39 | D37.09 | D49.0 |
| alveolar › mucosa › lower | C03.1 | C79.89 | D00.03 | D10.39 | D37.09 | D49.0 |
| alveolar › mucosa › upper | C03.0 | C79.89 | D00.03 | D10.39 | D37.09 | D49.0 |
| alveolar › ridge or process › mucosa | C03.9 | C79.89 | D00.03 | D10.39 | D37.09 | D49.0 |
| alveolar › ridge or process › mucosa › lower | C03.1 | C79.89 | D00.03 | D10.39 | D37.09 | D49.0 |
| alveolar › ridge or process › mucosa › upper | C03.0 | C79.89 | D00.03 | D10.39 | D37.09 | D49.0 |
| alveolus | C03.9 | C79.89 | D00.03 | D10.39 | D37.09 | D49.0 |
| alveolus › lower | C03.1 | C79.89 | D00.03 | D10.39 | D37.09 | D49.0 |
| alveolus › upper | C03.0 | C79.89 | D00.03 | D10.39 | D37.09 | D49.0 |
| connective tissue NEC › jaw | C03.9 | C79.89 | D00.03 | D10.39 | D48.1 | D49.0 |
| gingiva (alveolar) (marginal) | C03.9 | C79.89 | D00.03 | D10.39 | D37.09 | D49.0 |
| gingiva (alveolar) (marginal) › lower | C03.1 | C79.89 | D00.03 | D10.39 | D37.09 | D49.0 |
| gingiva (alveolar) (marginal) › mandibular | C03.1 | C79.89 | D00.03 | D10.39 | D37.09 | D49.0 |
| gingiva (alveolar) (marginal) › maxillary | C03.0 | C79.89 | D00.03 | D10.39 | D37.09 | D49.0 |
| gingiva (alveolar) (marginal) › upper | C03.0 | C79.89 | D00.03 | D10.39 | D37.09 | D49.0 |
| gum | C03.9 | C79.89 | D00.03 | D10.39 | D37.09 | D49.0 |
| gum › lower | C03.1 | C79.89 | D00.03 | D10.39 | D37.09 | D49.0 |
| gum › upper | C03.0 | C79.89 | D00.03 | D10.39 | D37.09 | D49.0 |
| interdental papillae | C03.9 | C79.89 | D00.03 | D10.39 | D37.09 | D49.0 |
| interdental papillae › lower | C03.1 | C79.89 | D00.03 | D10.39 | D37.09 | D49.0 |
| interdental papillae › upper | C03.0 | C79.89 | D00.03 | D10.39 | D37.09 | D49.0 |
| jaw › soft tissues | C03.9 | C79.89 | D00.03 | D10.39 | D37.09 | D49.0 |
| jaw › soft tissues › lower | C03.1 | C79.89 | D00.03 | D10.39 | D37.09 | D49.0 |
| jaw › soft tissues › upper | C03.0 | C79.89 | D00.03 | D10.39 | D37.09 | D49.0 |
| mandible › alveolar | C03.1 | C79.89 | D00.03 | D10.39 | D37.09 | D49.0 |
| mandible › alveolar › mucosa (carcinoma) | C03.1 | C79.89 | D00.03 | D10.39 | D37.09 | D49.0 |
| maxilla, maxillary (superior) › alveolar | C03.0 | C79.89 | D00.03 | D10.39 | D37.09 | D49.0 |
| maxilla, maxillary (superior) › alveolar › mucosa | C03.0 | C79.89 | D00.03 | D10.39 | D37.09 | D49.0 |
| mucosa | C03.9 | C79.89 | D00.03 | D10.39 | D37.09 | D49.0 |
| mucosa › alveolar (ridge or process) | C03.9 | C79.89 | D00.03 | D10.39 | D37.09 | D49.0 |
| mucosa › alveolar (ridge or process) › lower | C03.1 | C79.89 | D00.03 | D10.39 | D37.09 | D49.0 |
| mucosa › alveolar (ridge or process) › upper | C03.0 | C79.89 | D00.03 | D10.39 | D37.09 | D49.0 |
| periodontal tissue NEC | C03.9 | C79.89 | D00.03 | D10.39 | D37.09 | D49.0 |
| tooth socket NEC | C03.9 | C79.89 | D00.03 | D10.39 | D37.09 | D49.0 |
Patient EducationClinical
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Courtesy of MedlinePlus, a service of the U.S. National Library of Medicine.
Convert D00.03 to ICD-9-CMHistory
The closest ICD-9-CM equivalents under the General Equivalence Mappings.
Code HistoryHistory
Questions About D00.03Overview
What is the ICD-10 code for carcinoma in situ of gingiva and edentulous alveolar ridge?
The ICD-10-CM code for carcinoma in situ of gingiva and edentulous alveolar ridge is D00.03 (sometimes written as D0003). It is billable on HIPAA-covered claims from October 1, 2025 through September 30, 2026.
Is D00.03 (Carcinoma in situ of lip, oral cavity and pharynx) a billable code?
Yes. This is a billable ICD-10-CM code, specific enough to report carcinoma in situ of gingiva and edentulous alveolar ridge on HIPAA-covered claims from October 1, 2025 through September 30, 2026.
What MS-DRG does D00.03 group to?
When carcinoma in situ of gingiva and edentulous alveolar ridge is the principal diagnosis on an inpatient stay, it groups to MS-DRG 11, 12, 13, 146, 147, 148, with relative weights from 0.7971 to 5.4541 depending on complications. Higher weights mean higher Medicare reimbursement.
What is the ICD-9 equivalent of D00.03?
Under the General Equivalence Mappings, carcinoma in situ of gingiva and edentulous alveolar ridge converts to ICD-9-CM 230.0 (ca in situ oral cav/phar). The mapping is approximate, so confirm the match fits the documentation.
