Chapter 2

C00–D49: Neoplasms

Neoplasms diagnostic classification updated for 2026.

Internal Codes
  • C44.50

    Unspecified malignant neoplasm of skin of trunk

  • C44.500

    Unspecified malignant neoplasm of anal skin

  • C44.501

    Unspecified malignant neoplasm of skin of breast

  • C44.509

    Unspecified malignant neoplasm of skin of other part of trunk

  • C44.51

    Basal cell carcinoma of skin of trunk

  • C44.510

    Basal cell carcinoma of anal skin

  • C44.511

    Basal cell carcinoma of skin of breast

  • C44.519

    Basal cell carcinoma of skin of other part of trunk

  • C44.52

    Squamous cell carcinoma of skin of trunk

  • C44.520

    Squamous cell carcinoma of anal skin

  • C44.521

    Squamous cell carcinoma of skin of breast

  • C44.529

    Squamous cell carcinoma of skin of other part of trunk

  • C44.59

    Other specified malignant neoplasm of skin of trunk

  • C44.590

    Other specified malignant neoplasm of anal skin

  • C44.591

    Other specified malignant neoplasm of skin of breast

  • C44.599

    Other specified malignant neoplasm of skin of other part of trunk

  • C44.6

    Other and unspecified malignant neoplasm of skin of upper limb, including shoulder

  • C44.60

    Unspecified malignant neoplasm of skin of upper limb, including shoulder

  • C44.601

    Unspecified malignant neoplasm of skin of unspecified upper limb, including shoulder

  • C44.602

    Unspecified malignant neoplasm of skin of right upper limb, including shoulder

  • C44.609

    Unspecified malignant neoplasm of skin of left upper limb, including shoulder

  • C44.61

    Basal cell carcinoma of skin of upper limb, including shoulder

  • C44.611

    Basal cell carcinoma of skin of unspecified upper limb, including shoulder

  • C44.612

    Basal cell carcinoma of skin of right upper limb, including shoulder

  • C44.619

    Basal cell carcinoma of skin of left upper limb, including shoulder

  • C44.62

    Squamous cell carcinoma of skin of upper limb, including shoulder

  • C44.621

    Squamous cell carcinoma of skin of unspecified upper limb, including shoulder

  • C44.622

    Squamous cell carcinoma of skin of right upper limb, including shoulder

  • C44.629

    Squamous cell carcinoma of skin of left upper limb, including shoulder

  • C44.69

    Other specified malignant neoplasm of skin of upper limb, including shoulder

  • C44.691

    Other specified malignant neoplasm of skin of unspecified upper limb, including shoulder

  • C44.692

    Other specified malignant neoplasm of skin of right upper limb, including shoulder

  • C44.699

    Other specified malignant neoplasm of skin of left upper limb, including shoulder

  • C44.7

    Other and unspecified malignant neoplasm of skin of lower limb, including hip

  • C44.70

    Unspecified malignant neoplasm of skin of lower limb, including hip

  • C44.701

    Unspecified malignant neoplasm of skin of unspecified lower limb, including hip

  • C44.702

    Unspecified malignant neoplasm of skin of right lower limb, including hip

  • C44.709

    Unspecified malignant neoplasm of skin of left lower limb, including hip

  • C44.71

    Basal cell carcinoma of skin of lower limb, including hip

  • C44.711

    Basal cell carcinoma of skin of unspecified lower limb, including hip

  • C44.712

    Basal cell carcinoma of skin of right lower limb, including hip

  • C44.719

    Basal cell carcinoma of skin of left lower limb, including hip

  • C44.72

    Squamous cell carcinoma of skin of lower limb, including hip

  • C44.721

    Squamous cell carcinoma of skin of unspecified lower limb, including hip

  • C44.722

    Squamous cell carcinoma of skin of right lower limb, including hip

  • C44.729

    Squamous cell carcinoma of skin of left lower limb, including hip

  • C44.79

    Other specified malignant neoplasm of skin of lower limb, including hip

  • C44.791

    Other specified malignant neoplasm of skin of unspecified lower limb, including hip

  • C44.792

    Other specified malignant neoplasm of skin of right lower limb, including hip

  • C44.799

    Other specified malignant neoplasm of skin of left lower limb, including hip

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