C44.99

Billable

Other specified malignant neoplasm of skin, unspecified

Status

Billable / Specific

Chapter

2: Neoplasms

Block

C43-C44

Parent Code

C44.9

Coding Notes

Includes

Conditions included under this code

malignant neoplasm of sebaceous glands
malignant neoplasm of sweat glands

Excludes 1

Codes that cannot be used together with this code (mutual exclusion)

•Kaposi's sarcoma of skinC46.0
•malignant melanoma of skinC43
•malignant neoplasm of skin of genital organs, ,C51-C52, C60, C63.2
Merkel cell carcinoma (C4A.-)

Related Codes(3)

C44.90

Unspecified malignant neoplasm of skin, unspecified

Billable C44.91

Basal cell carcinoma of skin, unspecified

Billable C44.92

Squamous cell carcinoma of skin, unspecified

Billable

Also Known As / Clinical Terms(422)

SNOMED CT

UMLS

Clinical Terms

Primary malignant neoplasm of sebaceous gland
Mucoepidermal eccrine carcinoma
Primary eccrine ductal carcinoma of skin
Primary papillary digital eccrine carcinoma
Pigmented dermatofibrosarcoma protuberans of skin
Peripheral neuroepithelioma
Malignant infantile fibrosarcoma
Metastatic eccrine porocarcinoma
Myxoid dermatofibrosarcoma
Epithelioid sarcoma of Enzinger
Malignant neoplasm of skin with pilar differentiation
Primary myxofibrosarcoma
Malignant chondroid syringoma of skin
Peripheral neuroblastoma
Malignant fibrohistiocytic tumor of skin
Primary apocrine adenocarcinoma of skin
Extramammary Pagets disease of skin
Metatypical basal cell carcinoma of skin
Giant cell fibroblastoma with dermatofibrosarcoma protuberans
Secondary basosquamous cell carcinoma of skin
Primary adenocarcinoma of skin
Primary cutaneous fibrosarcoma
Pigmented storiform neurofibroma
Bednar tumour
Adenoid cystic eccrine carcinoma of skin
Keratinocytic epidermal carcinoma of skin
Endocrine mucin-producing sweat gland carcinoma
Primary eccrine carcinoma of skin
Metastatic basosquamous cell carcinoma of skin
Torré-Muir syndrome
Malignant mixed tumor of the skin
Eccrine carcinoma of skin
Primary syringomatous sweat duct carcinoma
Digital papillary adenocarcinoma
Mucinous eccrine carcinoma of skin
Primary carcinosarcoma of skin
Primary superficial malignant fibrous histiocytoma of skin
Infantile fibrosarcoma
Carcinoma simplex
Plaque-like dermatofibrosarcoma protuberans
Extramammary Paget disease of skin
Primary adenoid cystic eccrine carcinoma of skin
Dermatofibrosarcoma
Primary clear cell eccrine hidradenocarcinoma
Lymphoepithelioma-like carcinoma of skin
Primary microcystic adnexal carcinoma
Secondary sebaceous adenocarcinoma
Primary adnexal carcinoma of skin
Primary cutaneous sarcoma
Primary infantile fibrosarcoma
Trichilemmal carcinoma
Primary digital papillary adenocarcinoma
Bednar tumor
Metastatic sebaceous adenocarcinoma
Metastatic sebaceous adenocarcinoma to eyelid
Sebaceous adenocarcinoma of eyelid
Primary sclerosing sweat duct carcinoma
Primary malignant spiradenoma
Primary epithelioid sarcoma
Metastatic pilomatrix carcinoma
Myxoid dermatofibrosarcoma protuberans
Anaplastic syringoma
Primary cutaneous signet ring cell carcinoma
Primary mixed eccrine/pilar adnexal carcinoma of skin
Primary signet ring cell carcinoma of skin
Apocrine adenocarcinoma of skin
Papillary digital eccrine carcinoma
Primary extramammary Paget's disease of skin
Muir-Torré syndrome
Malignant spiradenoma
Pilomatrix carcinoma of skin
Primary myxofibrosarcoma of skin
Basosquamous carcinoma of skin
Primary eccrine porocarcinoma
Dermatofibrosarcoma protuberans with granular cell change
Primary anaplastic syringoma
Small cell eccrine carcinoma
Secondary malignant neoplasm of adnexa of skin
Extramammary Paget's disease of skin
Malignant chondroid syringoma
Sebaceous adenocarcinoma
Primary malignant fibrous histiocytoma of skin
Eccrine ductal carcinoma of skin
Malignant tumor of skin with pilar differentiation
Sweat gland adenocarcinoma
Primary small cell eccrine carcinoma
Primary clear cell eccrine hidradenocarcinoma of skin
Sebaceous carcinoma
Clear cell eccrine hidradenocarcinoma of skin
Cutaneous fibrosarcoma
Mucoepidermoid carcinoma of skin
DFSP - dermatofibrosarcoma protuberans
Primary malignant eccrine spiradenoma
Mixed eccrine/pilar adnexal carcinoma of skin
Torre-Muir syndrome
PNE - Peripheral neuroepithelioma
Dermatofibrosarcoma protuberans with myoid differentiation
Primary malignant chondroid syringoma of skin
Metastatic malignant neoplasm to adnexa of skin
Primary sebaceous carcinoma
Undifferentiated adnexal carcinoma of skin
Giant cell malignant fibrous histiocytoma of skin
Metastatic malignant neoplasm to conjunctiva
Microcystic adnexal carcinoma
Primary eccrine ductal carcinoma
Primary hidradenocarcinoma
Secondary malignant neoplasm of conjunctiva
Angiosarcoma of skin
Myxoid malignant fibrous histiocytoma of skin
Eccrine spiradenocarcinoma
Primary malignant sarcoma of skin
Sclerosing sweat duct carcinoma
BCC (basal cell carcinoma) with adnexal differentiation
Primary eccrine mixed tumor, malignant
Malignant tumour of skin with pilar differentiation
Primary syringoid eccrine carcinoma
Malignant mixed tumour of the skin
Primary small cell eccrine carcinoma of skin
Primary malignant eccrine spiradenoma of skin
Primary cutaneous adenocystic carcinoma
BCC - Metatypical basal cell carcinoma of skin
Lymphoepithelial tumour of skin
Primary malignant chondroid syringoma
Eccrine porocarcinoma of skin
Malignant cylindroma
Basal cell carcinoma with eccrine differentiation
Primary epithelioid sarcoma of skin
Primary myxoid malignant fibrous histiocytoma of skin
Primary giant cell malignant fibrous histiocytoma of skin
Primary sebaceous adenocarcinoma
Fibrosarcoma
Fibrosarcomatous dermatofibrosarcoma protuberans
Primary malignant neoplasm of sweat gland
Clear cell eccrine hidradenocarcinoma
Primary digital papillary eccrine carcinoma of skin
Primary mucinous eccrine carcinoma of skin
Primary eccrine spiradenocarcinoma
Eccrine ductal carcinoma
Primary microcystic adnexal carcinoma of skin
Primary eccrine porocarcinoma of skin
Syringoid eccrine carcinoma
Primary malignant acrospiroma
Malignant cylindroma of skin
Malignant skin tumor with apocrine differentiation
Metastatic malignant neoplasm of adnexa of skin
Primary epithelioid cell sarcoma of skin
Primary malignant eccrine acrospiroma
Malignant haemangiopericytoma of skin
Primary malignant syringoma
Metastatic basal cell carcinoma
Eccrine mixed tumor, malignant
Lymphoepithelial tumor of skin
Metastatic adenocarcinoma to skin
Primary malignant infantile fibrosarcoma
Primary sweat gland adenocarcinoma
Secondary sebaceous adenocarcinoma of eyelid
Malignant acrospiroma
Metastatic malignant neoplasm of sebaceous gland
Primary epithelioid sarcoma of Enzinger
Eccrine porocarcinoma
Torré-Muir syndrome co-occurrent with malignant sebaceous neoplasm
Primary inflammatory malignant fibrous histiocytoma of skin
Localized malignant reticulohistiocytoma
Pleomorphic malignant fibrous histiocytoma of skin
Primary eccrine mixed tumour, malignant
Metastatic adenocarcinoma of skin
Primary carcinoma simplex
Small cell eccrine carcinoma of skin
Malignant syringoma
Malignant eccrine spiradenoma of skin
Malignant skin tumour with apocrine differentiation
Inflammatory malignant fibrous histiocytoma of skin
Epithelioid sarcoma
Epithelioid sarcoma of skin
Malignant eccrine acrospiroma
Malignant fibrohistiocytic tumour of skin
Malignant hemangiopericytoma of skin
Metastatic basosquamous cell carcinoma to skin
Metastatic malignant neoplasm to sebaceous gland
Metastatic malignant neoplasm of conjunctiva
Pigmented dermatofibrosarcoma
Dermatofibrosarcoma protuberans with giant cell fibroblastoma
Dermatofibrosarcoma protuberans
Eccrine mixed tumour, malignant
Epithelioid cell sarcoma of skin
Metastatic apocrine adenocarcinoma
Primary pilomatrix carcinoma of skin
Primary pleomorphic malignant fibrous histiocytoma of skin
Malignant eccrine spiradenoma
Primary undifferentiated adnexal carcinoma of skin
Myxoid malignant fibrous histiocytoma
Primary malignant mixed tumour of the skin
Myxofibrosarcoma of skin
Primary malignant mixed tumor of the skin
Metastatic sebaceous adenocarcinoma of eyelid
Primary carcinoma of sebaceous gland
Basal cell carcinoma with adnexal differentiation
Secondary malignant neoplasm of sebaceous gland
Superficial malignant fibrous histiocytoma of skin
Primary mucoepidermoid carcinoma of skin
Microcystic adnexal carcinoma of skin
Digital papillary eccrine carcinoma of skin
Hidradenocarcinoma
Syringomatous sweat duct carcinoma
Carcinosarcoma of skin
Primary extramammary Paget disease of skin
Secondary adenocarcinoma of skin
Carcinoma of sebaceous gland
Localised malignant reticulohistiocytoma
Malignant dermal cylindroma

Frequently Asked Questions

What is the ICD-10 code for other specified malignant neoplasm of skin, unspecified?

The ICD-10-CM code for other specified malignant neoplasm of skin, unspecified is C44.99. The full clinical description is "Other specified malignant neoplasm of skin, unspecified". C44.99 is a billable/specific code that can be used on insurance claims and medical billing.

What does ICD-10 code C44.99 mean?

ICD-10-CM code C44.99 represents “Other specified malignant neoplasm of skin, unspecified”. It is classified under Chapter 2: Neoplasms and is a billable/specific code that can be used on a claim.

Is C44.99 a billable code?

Yes, C44.99 is a billable/specific ICD-10-CM code and can be used to indicate a diagnosis on a medical claim.

What chapter is C44.99 in?

C44.99 is in Chapter 2: Neoplasms (codes C00-D49).

What codes cannot be used with C44.99?

C44.99 has Excludes1 notes indicating codes that cannot be used together with it, including: Kaposi's sarcoma of skin (C46.0); malignant melanoma of skin (C43.-); malignant neoplasm of skin of genital organs (C51-C52, C60.-, C63.2); and 1 more.

What SNOMED CT codes does C44.99 map to?

C44.99 maps to 103 SNOMED CT concepts: 254711000, 403939009, 254794007, 403949007, 1293108004, and 98 more. SNOMED CT is a clinical terminology used in electronic health records.

What are the UMLS CUIs for C44.99?

C44.99 is linked to 1 UMLS Concept Unique Identifier: C3263824. The UMLS (Unified Medical Language System) integrates multiple biomedical vocabularies maintained by the U.S. National Library of Medicine.

How does C44.99 relate to ICF functioning codes?

ICF (International Classification of Functioning, Disability and Health) codes describe how conditions like other specified malignant neoplasm of skin, unspecified affect a person's functioning — body functions, activities, participation, and environmental factors. AutoICD provides ICF Core Sets for 12+ conditions and can map clinical text to ICF categories automatically. Browse the ICF directory to explore functioning codes.

What is the ICD-11 equivalent of C44.99?

There is no direct ICD-11 mapping available for C44.99 in the WHO crosswalk tables. This may mean the concept is classified differently in ICD-11. Use the ICD-10 to ICD-11 converter to search for related codes.

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Includes SNOMED Clinical Terms® (SNOMED CT®) used by permission of SNOMED International. Includes content from the UMLS Metathesaurus, courtesy of the U.S. National Library of Medicine.