Non-Billable / Non-Specific Code
ICD-10-CM C44.109 is the diagnosis code for Unspecified malignant neoplasm of skin of left eyelid, including canthus. This code falls under the section "Melanoma and other malignant neoplasms of skin" within Chapter 2 — Neoplasms (C00-D49). It is a non-billable/non-specific ICD-10-CM code that should not be used for reimbursement. A more specific sub-code is required for billing. Medical coders and healthcare providers use this code to document and classify diagnoses in electronic health records, insurance claims, and clinical databases.
Always refer to the official ICD-10-CM Tabular List for complete coding guidelines. Ensure documentation supports the specificity of the code selected. When in doubt, consult a certified medical coder or the latest CMS guidelines.
Understanding where C44.109 sits in the ICD-10-CM classification helps ensure proper coding:
No, C44.109 is a non-billable/non-specific code. You should use a more specific sub-code for billing and reimbursement.
C44.109 is the ICD-10-CM diagnosis code for "Unspecified malignant neoplasm of skin of left eyelid, including canthus". It is used by healthcare providers to classify and document this condition in medical records and insurance claims.
The parent code of C44.109 is C44.10 ("Unspecified malignant neoplasm of skin of eyelid, including canthus"). C44.109 provides a more specific classification within this category.
C44.109 is located in Section C43-C44 — "Melanoma and other malignant neoplasms of skin" within Chapter 2 of the ICD-10-CM Tabular List.
C44.109 has 2 sub-code(s) that provide more specific detail: C44.1091, C44.1092.
Use C44.109 when the patients documented diagnosis matches "Unspecified malignant neoplasm of skin of left eyelid, including canthus" and the clinical documentation supports this level of specificity. Always verify with the latest ICD-10-CM guidelines and payer requirements.
The ICD-10-CM code for Unspecified malignant neoplasm of skin of left eyelid, including canthus is C44.109.
No, C44.109 is non-billable. Use a more specific sub-code for primary diagnosis billing.
C44.109 is in Chapter 2 of the ICD-10-CM Tabular List.
Yes, C44.109 is a valid ICD-10-CM code for the 2026 fiscal year, subject to official CMS updates.