C4A.122
BillableMerkel cell carcinoma of left lower eyelid, inc canthus
Merkel cell carcinoma of left lower eyelid, including canthus
Cross-references
UMLS
How C4A.122 differs from sibling codes
All children of C4A.12 share the same parent. The wording below is what mechanically separates each sibling from C4A.122.
Also Known As / Clinical Terms(9)
SNOMED CT
UMLS
Clinical Terms
- Primary Merkel cell carcinoma of skin of lower eyelid
- Primary malignant neoplasm of skin of left lower eyelid
- Primary Merkel cell carcinoma of skin of left lower eyelid
Common questions
What is the ICD-10-CM code for Merkel cell carcinoma of left lower eyelid, inc canthus?
Merkel cell carcinoma of left lower eyelid, inc canthus is coded as C4A.122 in ICD-10-CM.
What is ICD-10 code C4A.122?
C4A.122 is the ICD-10-CM identifier for Merkel cell carcinoma of left lower eyelid, inc canthus. It is included in the official 2025 release of ICD-10-CM published by CMS and NCHS.
Is C4A.122 a billable code?
Yes, C4A.122 is a billable / specific ICD-10-CM code that can be used to indicate a diagnosis on a medical claim.
What is the parent code of C4A.122?
C4A.122 sits under C4A.12 (Merkel cell carcinoma of left eyelid, including canthus) in the ICD-10-CM hierarchy.
What chapter does C4A.122 belong to?
C4A.122 is in Chapter 2: Neoplasms.
What are the synonyms for Merkel cell carcinoma of left lower eyelid, inc canthus?
In clinical text, merkel cell carcinoma of left lower eyelid, inc canthus is also written as: Primary Merkel cell carcinoma of skin of left lower eyelid, Primary Merkel cell carcinoma of skin of lower eyelid, Primary malignant neoplasm of skin of left lower eyelid, Merkel Cell Carcinoma of Left Lower Eyelid, Including Canthus, Merkel cell carcinoma of left lower eyelid, including canthus. Sourced from SNOMED CT, UMLS Metathesaurus, and clinical-terms enrichment.
Why does C4A.122 map to multiple SNOMED CT concepts?
ICD-10-CM is a billing classification with broader categories than SNOMED CT’s clinical terminology. C4A.122 captures the billing-level concept; SNOMED CT splits it into 3 clinical concepts: 1335996009, 16905541000119102, 16905981000119104.
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Includes SNOMED Clinical Terms® (SNOMED CT®) used by permission of SNOMED International. Includes content from the UMLS Metathesaurus, courtesy of the U.S. National Library of Medicine.