C30.0
BillableMalignant neoplasm of nasal cavity
HCC Category Mapping
V28HCC 21 — Breast, Prostate, Colorectal and Other Cancers and Tumors
0.545V24HCC 11 — Colorectal, Bladder, and Other Cancers
0.306ESRDHCC 11 — Colorectal, Bladder, and Other Cancers
0.000RxHCCHCC 22 — Cancer, Other Specified Sites
0.000What This Code Means
Cancer that develops in the nasal cavity, the space inside the nose where air passes through.
Coding Tips
- •Distinguish between nasal cavity cancer and nasopharyngeal cancer (which uses different codes)
- •Document histology type as nasal cavity cancers can be squamous cell, adenocarcinoma, or other types
Clinical Significance
Nasal cavity cancers are uncommon and often present late due to nonspecific symptoms like nasal obstruction and epistaxis. They encompass multiple histological types including squamous cell carcinoma, adenocarcinoma, and esthesioneuroblastoma. Accurate coding is essential as treatment often involves complex surgery and radiation, driving significant resource utilization.
Documentation Requirements
- ✓Pathology confirmation with histological type (squamous cell, adenocarcinoma, esthesioneuroblastoma, melanoma)
- ✓Specific anatomical location within the nasal cavity (septum, lateral wall, turbinates, floor)
- ✓Extent of disease including any invasion into adjacent structures (orbit, sinuses, skull base)
- ✓TNM staging and treatment plan
- ✓Distinction from nasopharyngeal cancer
Excludes 1 — Do NOT code together
- malignant neoplasm of nasal bone (C41.0)
- malignant neoplasm of nose NOS (C76.0)
- malignant neoplasm of olfactory bulb (C72.2-)
- malignant neoplasm of posterior margin of nasal septum and choana (C11.3)
- malignant melanoma of skin of nose (C43.31)
- malignant neoplasm of turbinates (C41.0)
- other and unspecified malignant neoplasm of skin of nose (C44.301, C44.311, C44.321, C44.391)
Commonly Confused Codes
C11.9 — Malignant neoplasm of nasopharynx: The nasopharynx is posterior to the nasal cavity; these are anatomically and clinically distinctC31.0 — Malignant neoplasm of maxillary sinus: Nasal cavity tumors may extend into the maxillary sinus — code the primary siteD14.0 — Benign neoplasm of nasal cavity: Ensure malignancy is confirmed; inverted papillomas can transform to carcinomaC44.301 — Basal cell carcinoma of skin of nose: External nasal skin cancers use skin codes, not nasal cavity codes
Code Hierarchy
└C30Malignant neoplasm of nasal cavity and middle ear└C30.0Malignant neoplasm of nasal cavity
└C30.0Malignant neoplasm of nasal cavity