C72.22
BillableMalignant neoplasm of left olfactory nerve
HCC Category Mapping
V28HCC 20 — Lung and Other Severe Cancers
0.000V24HCC 10 — Lymphoma and Other Cancers
0.675ESRDHCC 10 — Lymphoma and Other Cancers
0.000RxHCCHCC 22 — Cancer, Other Specified Sites
0.000What This Code Means
A malignant (cancerous) tumor of the left olfactory nerve, which is the nerve responsible for the sense of smell on the left side.
Coding Tips
- •This code specifies the left side; use C72.21 for right side and verify laterality in documentation
- •Olfactory nerve tumors are rare; confirm diagnosis and ensure proper documentation of nerve origin
Clinical Significance
Malignant neoplasm of the left olfactory nerve is the laterality-specific counterpart for left-sided olfactory nerve cancers. Like all olfactory nerve malignancies, these are rare tumors that require multidisciplinary management. Accurate laterality coding supports treatment planning and epidemiological tracking of this uncommon malignancy.
Documentation Requirements
- ✓Pathology report with histological confirmation of malignancy
- ✓Clear documentation of left-sided olfactory nerve involvement
- ✓Imaging confirming laterality and extent of disease
- ✓Treatment status and current management plan
- ✓Documentation of any associated symptoms (anosmia, nasal obstruction)
Commonly Confused Codes
C72.21 — Malignant neoplasm of right olfactory nerve: Laterality reversal; confirm left side in documentationC72.20 — Malignant neoplasm of unspecified olfactory nerve: Use C72.22 when left side is confirmedC30.0 — Malignant neoplasm of nasal cavity: Different tissue of originC72.32 — Malignant neoplasm of left optic nerve: Different cranial nerve; verify nerve identification
Code Hierarchy
└C72Malignant neoplasm of spinal cord, cranial nerves and other parts of central nervous system└C72.2Malignant neoplasm of olfactory nerve└C72.22Malignant neoplasm of left olfactory nerve
└C72.22Malignant neoplasm of left olfactory nerve