Chapter 2 - Neoplasms (C00-D49)»Melanoma and other malignant neoplasms of skin (C43-C44)»Merkel cell carcinoma (C4A)
C4A
Merkel cell carcinoma
Sub-codes (10)
- C4A.0 Merkel cell carcinoma of lip
- C4A.1 Merkel cell carcinoma of eyelid, including canthus
- C4A.2 Merkel cell carcinoma of ear and external auricular canal
- C4A.3 Merkel cell carcinoma of other and unspecified parts of face
- C4A.4 Merkel cell carcinoma of scalp and neck
- C4A.5 Merkel cell carcinoma of trunk
- C4A.6 Merkel cell carcinoma of upper limb, including shoulder
- C4A.7 Merkel cell carcinoma of lower limb, including hip
- C4A.8 Merkel cell carcinoma of overlapping sites
- C4A.9 Merkel cell carcinoma, unspecified
Related indications (MeSH) (1)
Carcinoma, Merkel Cell99 drugs (41 approved, 58 experimental)
A carcinoma arising from MERKEL CELLS located in the basal layer of the epidermis and occurring most commonly as a primary neuroendocrine carcinoma of the skin. Merkel cells are tactile cells of neuroectodermal origin and histologically show neurosecretory granules. The skin of the head and neck are a common site of Merkel cell carcinoma, occurring generally in elderly patients. (Holland et al., Cancer Medicine, 3d ed, p1245)