carcinoma

DEFINITION of carcinoma

The term carcinoma refers to the most common type of cancer (malignant neoplasm), which arises from epithelial cells that form the lining of internal organs and the outer surfaces of the body. Carcinomas are capable of aggressive local invasion and distant metastasis, frequently spreading through the lymphatic system before entering the bloodstream. Major subtypes include adenocarcinoma (arising in glandular tissue), squamous cell carcinoma (arising in squamous epithelium), basal cell carcinoma (affecting the basal layer of the epidermis), and transitional cell carcinoma (affecting the urinary tract).

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ETYMOLOGY of carcinoma

greek

Component	Origin	Meaning
carcin-	Greek karkinos (καρκίνος)	“Crab” or “cancer”
-oma	Greek -oma (-ωμα)	“Tumor”, “mass”, or “fluid collection”

Hippocrates and Galen used the term karkinos to describe malignant tumors because the swollen, distended blood vessels radiating from the central mass resembled the legs of a crab.

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🔀 ALIASES / ALTERNATE TERMS

• Cancer (general term)
• Malignant neoplasm
• CA (common clinical abbreviation)
• Adenocarcinoma (glandular carcinoma)
• Squamous cell carcinoma (SCC)
• Basal cell carcinoma (BCC)
• Carcinoma in situ (CIS) (early form that has not invaded surrounding tissue)

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🔗 RELATED TERMS

• sarcoma — a malignant tumor arising from connective tissue (bone, cartilage, fat, muscle), distinct from epithelial carcinoma.
• Melanoma — a malignancy of melanocytes (pigment-producing cells), often highly aggressive.
• Metastasis — the spread of carcinoma cells from the primary site to distant organs or lymph nodes.
• neoplasm — an abnormal mass of tissue resulting from uncontrolled cell division; can be benign or malignant.
• dysplasia — abnormal development or growth of cells, often a precursor to carcinoma in situ.
• Tumor markers — substances (like CEA or CA-125) produced by cancer cells or the body in response to cancer, measurable in blood.
• Oncology — the medical specialty dedicated to the study, diagnosis, and treatment of cancer.

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CODING CORNER

🏥 ICD-10-CM CODES

Primary Malignant Neoplasms (Examples)

Code	Description
C80.1	Malignant (primary) neoplasm, unspecified
C44.311	Basal cell carcinoma of skin of nose
C44.321	Squamous cell carcinoma of skin of nose
C50.911	Malignant neoplasm of unspecified site of right female breast
C34.91	Malignant neoplasm of unspecified part of right bronchus or lung
C61	Malignant neoplasm of prostate

Secondary (Metastatic) Malignant Neoplasms

Code	Description
C79.9	Secondary malignant neoplasm of unspecified site
C77.0	Secondary and unspecified malignant neoplasm of lymph nodes of head, face and neck
C78.7	Secondary malignant neoplasm of liver and intrahepatic bile duct
C78.01	Secondary malignant neoplasm of right lung

Carcinoma In Situ & History Codes

Code	Description
D04.4	Carcinoma in situ of skin of scalp and neck
D05.91	Unspecified type of carcinoma in situ of right breast
Z85.89	Personal history of malignant neoplasm of other organs and systems
Z85.3	Personal history of malignant neoplasm of breast

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🔧 COMMON CPT CODES (Carcinoma-Related Procedures)

CPT Code	Description
11102	Tangential biopsy of skin (e.g., shave, scoop, saucerize, curette); single lesion
11642	Excision, malignant lesion including margins, face, ears, eyelids, nose, lips; excised diameter 1.1 to 2.0 cm
17262	Destruction, malignant lesion (e.g., laser, electrosurgery, cryosurgery, chemosurgery), trunk, arms or legs; lesion diameter 1.1 to 2.0 cm
38500	Biopsy or excision of lymph node(s); open, superficial
88305	Level IV - Surgical pathology, gross and microscopic examination
19301	Mastectomy, partial (e.g., lumpectomy, tylectomy, quadrantectomy, segmentectomy)

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⚠️ Coding Note: In ICD-10-CM, coding for carcinoma requires strict adherence to the Neoplasm Guidelines. Always determine the primary vs. secondary (metastatic) sites. If the primary malignancy has been excised/eradicated and there is no adjunct treatment occurring, code a “Personal history of” (Z85.- category) rather than an active malignancy code. Treatment encounters directed at the malignancy (e.g., chemotherapy, radiation) require the therapy Z-code (like Z51.11 for antineoplastic chemotherapy) as the principal diagnosis, followed by the active carcinoma code.

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DERIVATIONS of carcinoma

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Query functionality

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Med roots Appendix A Prefixes Appendix B Combining Forms Appendix C Suffixes Appendix D Suffix forms