Chapter 2

C00–D49: Neoplasms

Neoplasms diagnostic classification updated for 2026.

Internal Codes
  • C44.229

    Squamous cell carcinoma of skin of left ear and external auricular canal

  • C44.291

    Other specified malignant neoplasm of skin of unspecified ear and external auricular canal

  • C44.292

    Other specified malignant neoplasm of skin of right ear and external auricular canal

  • C44.299

    Other specified malignant neoplasm of skin of left ear and external auricular canal

  • C44.300

    Unspecified malignant neoplasm of skin of unspecified part of face

  • C44.301

    Unspecified malignant neoplasm of skin of nose

  • C44.309

    Unspecified malignant neoplasm of skin of other parts of face

  • C44.310

    Basal cell carcinoma of skin of unspecified parts of face

  • C44.311

    Basal cell carcinoma of skin of nose

  • C44.319

    Basal cell carcinoma of skin of other parts of face

  • C44.320

    Squamous cell carcinoma of skin of unspecified parts of face

  • C44.321

    Squamous cell carcinoma of skin of nose

  • C44.329

    Squamous cell carcinoma of skin of other parts of face

  • C44.390

    Other specified malignant neoplasm of skin of unspecified parts of face

  • C44.391

    Other specified malignant neoplasm of skin of nose

  • C44.399

    Other specified malignant neoplasm of skin of other parts of face

  • C44.40

    Unspecified malignant neoplasm of skin of scalp and neck

  • C44.41

    Basal cell carcinoma of skin of scalp and neck

  • C44.42

    Squamous cell carcinoma of skin of scalp and neck

  • C44.49

    Other specified malignant neoplasm of skin of scalp and neck

  • 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

  • C44.510

    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

  • C44.520

    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

  • C44.590

    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

  • C44.601

    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

  • C44.611

    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

  • C44.621

    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

  • C44.691

    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

  • C44.701

    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

  • C44.711

    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

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