1. C44 Other and unspecified malignant neoplasm of skin

    Includes:

    • malignant neoplasm of sebaceous glands
    • malignant neoplasm of sweat glands

    Excludes1

    • Kaposi's sarcoma of skin (C46.0)
    • malignant melanoma of skin (C43.-)
    • malignant neoplasm of skin of genital organs (C51-C52, C60.-, C63.2)
    • Merkel cell carcinoma (C4A.-)
    1. C44.0 Other and unspecified malignant neoplasm of skin of lip

      1. C44.00 Unspecified malignant neoplasm of skin of lip

      2. C44.01 Basal cell carcinoma of skin of lip

      3. C44.02 Squamous cell carcinoma of skin of lip

      4. C44.09 Other specified malignant neoplasm of skin of lip

    2. C44.1 Other and unspecified malignant neoplasm of skin of eyelid, including canthus

      1. C44.10 Unspecified malignant neoplasm of skin of eyelid, including canthus

        • C44.101 Unspecified malignant neoplasm of skin of unspecified eyelid, including canthus
        • C44.102 Unspecified malignant neoplasm of skin of right eyelid, including canthus
        • C44.109 Unspecified malignant neoplasm of skin of left eyelid, including canthus
      2. C44.11 Basal cell carcinoma of skin of eyelid, including canthus

        • C44.111 Basal cell carcinoma of skin of unspecified eyelid, including canthus
        • C44.112 Basal cell carcinoma of skin of right eyelid, including canthus
        • C44.119 Basal cell carcinoma of skin of left eyelid, including canthus
      3. C44.12 Squamous cell carcinoma of skin of eyelid, including canthus

        • C44.121 Squamous cell carcinoma of skin of unspecified eyelid, including canthus
        • C44.122 Squamous cell carcinoma of skin of right eyelid, including canthus
        • C44.129 Squamous cell carcinoma of skin of left eyelid, including canthus
      4. C44.13 Sebaceous cell carcinoma of skin of eyelid, including canthus

        • C44.131 Sebaceous cell carcinoma of skin of unspecified eyelid, including canthus
        • C44.132 Sebaceous cell carcinoma of skin of right eyelid, including canthus
        • C44.139 Sebaceous cell carcinoma of skin of left eyelid, including canthus
      5. C44.19 Other specified malignant neoplasm of skin of eyelid, including canthus

        • C44.191 Other specified malignant neoplasm of skin of unspecified eyelid, including canthus
        • C44.192 Other specified malignant neoplasm of skin of right eyelid, including canthus
        • C44.199 Other specified malignant neoplasm of skin of left eyelid, including canthus
    3. C44.2 Other and unspecified malignant neoplasm of skin of ear and external auricular canal

      1. C44.20 Unspecified malignant neoplasm of skin of ear and external auricular canal

        • 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
      2. C44.21 Basal cell carcinoma of skin of 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
      3. C44.22 Squamous cell carcinoma of skin of 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
        • C44.229 Squamous cell carcinoma of skin of left ear and external auricular canal
      4. C44.29 Other specified malignant neoplasm of skin of 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
    4. C44.3 Other and unspecified malignant neoplasm of skin of other and unspecified parts of face

      1. C44.30 Unspecified malignant neoplasm of skin of other and unspecified parts of face

        • 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
      2. C44.31 Basal cell carcinoma of skin of other and unspecified 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
      3. C44.32 Squamous cell carcinoma of skin of other and unspecified 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
      4. C44.39 Other specified malignant neoplasm of skin of other and unspecified 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
    5. C44.4 Other and unspecified malignant neoplasm of skin of scalp and neck

      1. C44.40 Unspecified malignant neoplasm of skin of scalp and neck

      2. C44.41 Basal cell carcinoma of skin of scalp and neck

      3. C44.42 Squamous cell carcinoma of skin of scalp and neck

      4. C44.49 Other specified malignant neoplasm of skin of scalp and neck

    6. C44.5 Other and unspecified malignant neoplasm of skin of trunk

      1. C44.50 Unspecified malignant neoplasm of skin of trunk

        • C44.500 Unspecified malignant neoplasm of anal skin

          Inclusion term(s):

          • Unspecified malignant neoplasm of anal margin
          • Unspecified malignant neoplasm of perianal skin
        • C44.501 Unspecified malignant neoplasm of skin of breast
        • C44.509 Unspecified malignant neoplasm of skin of other part of trunk
      2. C44.51 Basal cell carcinoma of skin of trunk

        • C44.510 Basal cell carcinoma of anal skin

          Inclusion term(s):

          • Basal cell carcinoma of anal margin
          • Basal cell carcinoma of perianal skin
        • C44.511 Basal cell carcinoma of skin of breast
        • C44.519 Basal cell carcinoma of skin of other part of trunk
      3. C44.52 Squamous cell carcinoma of skin of trunk

        • C44.520 Squamous cell carcinoma of anal skin

          Inclusion term(s):

          • Squamous cell carcinoma of anal margin
          • Squamous cell carcinoma of perianal skin
        • C44.521 Squamous cell carcinoma of skin of breast
        • C44.529 Squamous cell carcinoma of skin of other part of trunk
      4. C44.59 Other specified malignant neoplasm of skin of trunk

        • C44.590 Other specified malignant neoplasm of anal skin

          Inclusion term(s):

          • Other specified malignant neoplasm of anal margin
          • Other specified malignant neoplasm of perianal skin
        • C44.591 Other specified malignant neoplasm of skin of breast
        • C44.599 Other specified malignant neoplasm of skin of other part of trunk
    7. C44.6 Other and unspecified malignant neoplasm of skin of upper limb, including shoulder

      1. 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
      2. 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
      3. 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
      4. 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
    8. C44.7 Other and unspecified malignant neoplasm of skin of lower limb, including hip

      1. 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
      2. 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
      3. 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
      4. 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
    9. C44.8 Other and unspecified malignant neoplasm of overlapping sites of skin

      1. C44.80 Unspecified malignant neoplasm of overlapping sites of skin

      2. C44.81 Basal cell carcinoma of overlapping sites of skin

      3. C44.82 Squamous cell carcinoma of overlapping sites of skin

      4. C44.89 Other specified malignant neoplasm of overlapping sites of skin

    10. C44.9 Other and unspecified malignant neoplasm of skin, unspecified

      1. C44.90 Unspecified malignant neoplasm of skin, unspecified

        Inclusion term(s):

        • Malignant neoplasm of unspecified site of skin
      2. C44.91 Basal cell carcinoma of skin, unspecified

      3. C44.92 Squamous cell carcinoma of skin, unspecified

      4. C44.99 Other specified malignant neoplasm of skin, unspecified

Abbreviations used here:

NEC Not elsewhere classifiable
This abbreviation in the Tabular List represents “other specified”. When a specific code is not available for a condition, the Tabular List includes an NEC entry under a code to identify the code as the “other specified” code.

NOS Not otherwise specified
This abbreviation is the equivalent of unspecified.