ICD-9-CM diagnosis code (retired)
230.0 — Carcinoma in situ of lip, oral cavity, and pharynx
ICD-9-CM was replaced by ICD-10 on October 1, 2015. These are the ICD-10-CM equivalents from the CMS General Equivalence Mappings.
About ICD-9-CM 230.0
230.0 is an ICD-9-CM diagnosis code for carcinoma in situ of lip, oral cavity, and pharynx. ICD-9-CM was retired for U.S. claims on October 1, 2015, when ICD-10-CM took over.
The CMS General Equivalence Mappings translate it to 9 ICD-10-CM codes, such as D00.00 (Carcinoma in situ of oral cavity, unspecified site), D00.01 (Carcinoma in situ of labial mucosa and vermilion border) and D00.02 (Carcinoma in situ of buccal mucosa). All of these are approximate matches, so review the record to pick the right one.
ICD-10-CM equivalents
- D00.00Carcinoma in situ of oral cavity, unspecified siteapproximate
- D00.01Carcinoma in situ of labial mucosa and vermilion borderapproximate
- D00.02Carcinoma in situ of buccal mucosaapproximate
- D00.03Carcinoma in situ of gingiva and edentulous alveolar ridgeapproximate
- D00.04Carcinoma in situ of soft palateapproximate
- D00.05Carcinoma in situ of hard palateapproximate
- D00.06Carcinoma in situ of floor of mouthapproximate
- D00.07Carcinoma in situ of tongueapproximate
- D00.08Carcinoma in situ of pharynxapproximate
Common questions about 230.0
GEMs are a translation aid, not a substitute for coding from the record. The 2027 ICD-10 code set has changed since the last GEMs release in 2018. Page updated September 29, 2026.