C44 Other and unspecified malignant neoplasm of skin

⚠ Non-Billable ICD-10-CM 2026
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The ICD-10-CM code for Other and unspecified malignant neoplasm of skin is C44 (FY2026). It is a non-billable category code — select a more specific code below for claims.

Classification

Section
C43-C44: Melanoma and other malignant neoplasms of skin (C43-C44)
Category C44
147 codes (101 billable)
FY2026 Status
Stable since FY2024
Includes
  • malignant neoplasm of sebaceous glands
  • malignant neoplasm of sweat glands
Excludes1
Not coded here. These conditions should NOT be coded together with C44.
  • 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.-)

Official Coding Guidelines

Tx of primary site (TOC entry)

a. Admission/Encounter for treatment of primary site ............................................................. 33

— ICD-10-CM Official Guidelines for Coding and Reporting, FY2026, Section I.C.2.a
Tx of secondary site (TOC entry)

b. Admission/Encounter for treatment of secondary site .......................................................... 33

— ICD-10-CM Official Guidelines for Coding and Reporting, FY2026, Section I.C.2.b

Source: CMS — ICD-10-CM Official Guidelines for Coding and Reporting, FY2026

References

Cite This Page

Reference C44 with the canonical source and edition:

C44 — Other and unspecified malignant neoplasm of skin. ICD-10 Coding Pro (ICD-10-CM FY2026). https://icd10codingpro.com/codes/C44

Canonical URL: https://icd10codingpro.com/codes/C44

Related Codes

More Specific Codes

C44.0 Other and unspecified malignant neoplasm of skin of lip C44.1 Other and unspecified malignant neoplasm of skin of eyelid, including canthus C44.2 Other and unspecified malignant neoplasm of skin of ear and external auricular canal C44.3 Other and unspecified malignant neoplasm of skin of other and unspecified parts of face C44.4 Other and unspecified malignant neoplasm of skin of scalp and neck C44.5 Other and unspecified malignant neoplasm of skin of trunk C44.6 Other and unspecified malignant neoplasm of skin of upper limb, including shoulder C44.7 Other and unspecified malignant neoplasm of skin of lower limb, including hip C44.8 Other and unspecified malignant neoplasm of overlapping sites of skin C44.9 Other and unspecified malignant neoplasm of skin, unspecified

All Codes in C44

Every most-specific code under C44 Other and unspecified malignant neoplasm of skin (101 codes):

Show the complete C44 code list
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 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 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 C44.791 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 C44.80 Unspecified malignant neoplasm of overlapping sites of skin C44.81 Basal cell carcinoma of overlapping sites of skin C44.82 Squamous cell carcinoma of overlapping sites of skin C44.89 Other specified malignant neoplasm of overlapping sites of skin C44.90 Unspecified malignant neoplasm of skin, unspecified C44.91 Basal cell carcinoma of skin, unspecified C44.92 Squamous cell carcinoma of skin, unspecified C44.99 Other specified malignant neoplasm of skin, unspecified
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Reviewed by Prajwal Shrestha, CPC, CRC
Certified Professional Coder (CPC) and Certified Risk Adjustment Coder (CRC) · AAPC Member ID 01997614 · About · Editorial policy · Content last reviewed: 2025-10-01

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