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D00.02 Carcinoma in situ of buccal mucosa
Instructional Notes:
D00.02 Description: Carcinoma in situ of buccal mucosa ↓
D00.0 Description: Carcinoma in situ of lip, oral cavity and pharynx Exclude1:
carcinoma in situ of aryepiglottic fold or interarytenoid fold, laryngeal aspect (D02.0)
carcinoma in situ of epiglottis NOS (D02.0)
carcinoma in situ of epiglottis suprahyoid portion (D02.0)
carcinoma in situ of skin of lip (D03.0, D04.0)
Use Additional Code:
code to identify:
exposure to environmental tobacco smoke (Z77.22)
exposure to tobacco smoke in the perinatal period (P96.81)
history of tobacco dependence (Z87.891)
occupational exposure to environmental tobacco smoke (Z57.31)
tobacco dependence (F17.-)
tobacco use (Z72.0)
↓
D00 Description: Carcinoma in situ of oral cavity, esophagus and stomach Exclude1:
melanoma in situ (D03.-)
↓
D00-D09 Description: In situ neoplasms (D00-D09) Include:
Bowen's disease
erythroplasia
grade III intraepithelial neoplasia
Queyrat's erythroplasia
↓
C00-D49 Description: Neoplasms Notes:
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).