Chapter 2

C00–D49: Neoplasms

Neoplasms diagnostic classification updated for 2026.

Internal Codes
  • C43.39

    Malignant melanoma of other parts of face

  • C43.4

    Malignant melanoma of scalp and neck

  • C43.51

    Malignant melanoma of anal skin

  • C43.52

    Malignant melanoma of skin of breast

  • C43.59

    Malignant melanoma of other part of trunk

  • C43.60

    Malignant melanoma of unspecified upper limb, including shoulder

  • C43.61

    Malignant melanoma of right upper limb, including shoulder

  • C43.62

    Malignant melanoma of left upper limb, including shoulder

  • C43.70

    Malignant melanoma of unspecified lower limb, including hip

  • C43.71

    Malignant melanoma of right lower limb, including hip

  • C43.72

    Malignant melanoma of left lower limb, including hip

  • C43.8

    Malignant melanoma of overlapping sites of skin

  • C43.9

    Malignant melanoma of skin, unspecified

  • C44.00

    Unspecified malignant neoplasm of skin of lip

  • C44.01

    Basal cell carcinoma of skin of lip

  • C44.02

    Squamous cell carcinoma of skin of lip

  • C44.09

    Other specified malignant neoplasm of skin of lip

  • C44.101

    Unspecified malignant neoplasm of skin of unspecified eyelid, including canthus

  • C44.1021

    Unspecified malignant neoplasm of skin of right upper eyelid, including canthus

  • C44.1022

    Unspecified malignant neoplasm of skin of right lower eyelid, including canthus

  • C44.1091

    Unspecified malignant neoplasm of skin of left upper eyelid, including canthus

  • C44.1092

    Unspecified malignant neoplasm of skin of left lower eyelid, including canthus

  • C44.111

    Basal cell carcinoma of skin of unspecified eyelid, including canthus

  • C44.1121

    Basal cell carcinoma of skin of right upper eyelid, including canthus

  • C44.1122

    Basal cell carcinoma of skin of right lower eyelid, including canthus

  • C44.1191

    Basal cell carcinoma of skin of left upper eyelid, including canthus

  • C44.1192

    Basal cell carcinoma of skin of left lower eyelid, including canthus

  • C44.121

    Squamous cell carcinoma of skin of unspecified eyelid, including canthus

  • C44.1221

    Squamous cell carcinoma of skin of right upper eyelid, including canthus

  • C44.1222

    Squamous cell carcinoma of skin of right lower eyelid, including canthus

  • C44.1291

    Squamous cell carcinoma of skin of left upper eyelid, including canthus

  • C44.1292

    Squamous cell carcinoma of skin of left lower eyelid, including canthus

  • C44.131

    Sebaceous cell carcinoma of skin of unspecified eyelid, including canthus

  • C44.1321

    Sebaceous cell carcinoma of skin of right upper eyelid, including canthus

  • C44.1322

    Sebaceous cell carcinoma of skin of right lower eyelid, including canthus

  • C44.1391

    Sebaceous cell carcinoma of skin of left upper eyelid, including canthus

  • C44.1392

    Sebaceous cell carcinoma of skin of left lower eyelid, including canthus

  • C44.191

    Other specified malignant neoplasm of skin of unspecified eyelid, including canthus

  • C44.1921

    Other specified malignant neoplasm of skin of right upper eyelid, including canthus

  • C44.1922

    Other specified malignant neoplasm of skin of right lower eyelid, including canthus

  • C44.1991

    Other specified malignant neoplasm of skin of left upper eyelid, including canthus

  • C44.1992

    Other specified malignant neoplasm of skin of left lower eyelid, including canthus

  • C44.201

    Unspecified malignant neoplasm of skin of unspecified ear and external auricular canal

  • C44.202

    Unspecified malignant neoplasm of skin of right ear and external auricular canal

  • C44.209

    Unspecified malignant neoplasm of skin of left ear and external auricular canal

  • C44.211

    Basal cell carcinoma of skin of unspecified ear and external auricular canal

  • C44.212

    Basal cell carcinoma of skin of right ear and external auricular canal

  • C44.219

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

  • C44.221

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

  • C44.222

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

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