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    v1.0.28
    OpenPayerBilling CodesMelanoma and other malignant neoplasms of skinICD-10-CM c44-other-and-unspecified-skin-malignancy
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    ICD-10-CM Code For Other And Unspecified Malignant Neoplasm Of Skin: Group Overview

    The International Classification of Diseases, Tenth Revision, Clinical Modification (ICD-10-CM) code group C44 includes malignant neoplasms of the skin that are not specified as occurring in a more specific site or histologic type, covering non-melanoma primary skin cancers and unspecified skin malignancies. These ICD-10-CM diagnosis codes are used to document cutaneous malignancy diagnoses, capture site specificity when known, and reflect extent or laterality when applicable. Accurate coding within the ICD-10-CM C44 group supports proper claim adjudication, complete clinical documentation, and appropriate reimbursement.

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    ICD-10-CM C44: Other And Unspecified Malignant Neoplasm Of Skin Overview

    The ICD-10-CM C44 group captures malignant neoplasms of the skin that are not classified elsewhere or are unspecified. These diagnoses target cutaneous malignancies arising from non-melanoma skin cells and other skin sites. Accurate coding impacts clinical documentation and is important for appropriate reimbursement and care coordination.

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    When to Use

    Use a code from this group when a clinician documents a malignant neoplasm of the skin without a more specific anatomic site or histology to select a different code. Codes in this group are appropriate when primary cutaneous malignancy is confirmed but additional specificity about location or type is not provided.

    ICD-10-CM Codes

    101 rows

    ICD-10-CM CodeDescription
    C44.00Unspecified malignant neoplasm of skin of lip
    C44.01Basal cell carcinoma of skin of lip
    C44.02Squamous cell carcinoma of skin of lip
    C44.09Other specified malignant neoplasm of skin of lip
    C44.101Unspecified malignant neoplasm of skin of unspecified eyelid, including canthus
    C44.1021Unspecified malignant neoplasm of skin of right upper eyelid, including canthus
    C44.1022Unspecified malignant neoplasm of skin of right lower eyelid, including canthus
    C44.1091Unspecified malignant neoplasm of skin of left upper eyelid, including canthus
    C44.1092Unspecified malignant neoplasm of skin of left lower eyelid, including canthus
    C44.111Basal cell carcinoma of skin of unspecified eyelid, including canthus
    C44.1121Basal cell carcinoma of skin of right upper eyelid, including canthus
    C44.1122Basal cell carcinoma of skin of right lower eyelid, including canthus
    C44.1191Basal cell carcinoma of skin of left upper eyelid, including canthus
    C44.1192Basal cell carcinoma of skin of left lower eyelid, including canthus
    C44.121Squamous cell carcinoma of skin of unspecified eyelid, including canthus
    C44.1221Squamous cell carcinoma of skin of right upper eyelid, including canthus
    C44.1222Squamous cell carcinoma of skin of right lower eyelid, including canthus
    C44.1291Squamous cell carcinoma of skin of left upper eyelid, including canthus
    C44.1292Squamous cell carcinoma of skin of left lower eyelid, including canthus
    C44.131Sebaceous cell carcinoma of skin of unspecified eyelid, including canthus

    Showing 1–20 of 101

    DRG Codes

    7 rows

    DRG CodeDescription
    011Tracheostomy for Face, Mouth and Neck Diagnoses or Laryngectomy with MCC
    012Tracheostomy for Face, Mouth and Neck Diagnoses or Laryngectomy with CC
    013Tracheostomy for Face, Mouth and Neck Diagnoses or Laryngectomy without CC/MCC
    124Other Disorders of the Eye with MCC or Thrombolytic Agent
    125Other Disorders of the Eye without MCC
    606Minor Skin Disorders with MCC
    607Minor Skin Disorders without MCC

    Typical Clinical Scenarios

    • An elderly patient with a chronic, slowly enlarging ulcerated lesion on the lower lip presents to dermatology for biopsy after non-healing despite topical wound care; pathology confirms squamous cell carcinoma of skin at a specific lip site. The visit documents the laterality and exact site for staging and treatment planning, so a site-specific code from the group is assigned. Typical codes: C44.1121, C44.1191
    • A middle-aged outdoor worker is seen in urgent care for a rapidly growing, pigmented nodular lesion on the scalp that bleeds easily; excisional biopsy in the ED shows malignant melanoma involving the scalp with uncertain behavior requiring prompt oncology referral. Because the lesion is on the scalp and requires an acute procedure and staging, a scalp-specific malignant skin neoplasm code from the group is used. Typical codes: C44.492, C44.491
    • A patient with a history of prior skin cancer presents to oncology for surveillance after resection of a malignant lesion on the right lower leg; routine follow-up documents local recurrence at the same site and ongoing management for residual malignancy. A code indicating malignant neoplasm of skin of the lower limb with right laterality and recurrence/residual tumor status is assigned to capture the chronic oncologic condition. Typical codes: C44.422, C44.429

    Related Codes

    C43-MALIGNANT-MELANOMA-OF-SKIN

    ICD-10-CM Code For Malignant Melanoma Of Skin: Group Overview

    C4A-MERKEL-CELL-CARCINOMA

    ICD-10-CM Code For Merkel Cell Carcinoma: Group Overview

    Frequently Asked Questions

    References

    1. 1.CPT® Codes and Descriptions. AAPC. Retrieved Aug 11, 2026.Maintains the CPT code set's official descriptions and guidelines, licensed from the American Medical Association, used as the definitional source for CPT codes on this page.
    2. 2.HCPCS Quarterly Update. Centers for Medicare & Medicaid Services (CMS). Retrieved Aug 11, 2026.CMS's quarterly release of HCPCS Level II codes and short/long descriptors, the source for HCPCS code definitions and update history.
    3. 3.ICD-10-CM Full Code List. Centers for Medicare & Medicaid Services (CMS). Retrieved Aug 11, 2026.CMS's complete ICD-10-CM diagnosis code list, used to cross-reference diagnosis codes associated with this procedure or service.
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