ICD-10 Code C79.2

Secondary malignant neoplasm of skin

Version 2019 Billable Code Neoplasm Malignant Secondary
ICD-10: C79.2
Short Description:Secondary malignant neoplasm of skin
Long Description:Secondary malignant neoplasm of skin

Valid for Submission

ICD-10 C79.2 is a billable code used to specify a medical diagnosis of secondary malignant neoplasm of skin. The code is valid for the year 2019 for the submission of HIPAA-covered transactions.

Code Classification

  • Neoplasms (C00–D48)
    • Malignant neoplasms of ill-defined, other secondary and unspecified sites (C76-C80)
      • Secondary malignant neoplasm of other and unspecified sites (C79)

Information for Medical Professionals

Diagnostic Related Groups

The Diagnostic Related Groups (DRGs) are a patient classification scheme which provides a means of relating the type of patients a hospital treats. The DRGs divides all possible principal diagnoses into mutually exclusive principal diagnosis areas referred to as Major Diagnostic Categories (MDC). The diagnosis code C79.2 is grouped in the following groups for version MS-DRG V36.0 applicable from 10/01/2018 through 09/30/2019.

  • 582 - MASTECTOMY FOR MALIGNANCY WITH CC/MCC
  • 583 - MASTECTOMY FOR MALIGNANCY WITHOUT CC/MCC

Convert C79.2 to ICD-9

The following crosswalk between ICD-10 to ICD-9 is based based on the General Equivalence Mappings (GEMS) information:

  • 198.2 - Secondary malig neo skin

Synonyms

The following clinical terms are approximate synonyms:

  • Carcinomatous metastasis in skin
  • Leukemic infiltration of skin
  • Leukemic infiltration of skin
  • Lip and oral cavity TNM finding
  • Lip and oral cavity TNM finding
  • Major salivary gland TNM finding
  • Malignant infiltration of skin by underlying tumor
  • Malignant melanoma of unknown origin
  • Malignant neoplasm of scalp
  • Malignant neoplasm of skin of abdominal wall
  • Malignant neoplasm of skin of abdominal wall
  • Malignant neoplasm of skin of cheek, external
  • Malignant neoplasm of skin of external auditory meatus
  • Malignant tumor of unknown origin
  • Malignant tumor of unknown origin or ill-defined site
  • Maxillary sinus TNM finding
  • Metastasis to skin of unknown primary
  • Neoplasm of skin of ankle
  • Neoplasm of skin of axilla
  • Neoplasm of skin of buttock
  • Neoplasm of skin of chin
  • Neoplasm of skin of elbow
  • Neoplasm of skin of external auditory canal
  • Neoplasm of skin of eyebrow
  • Neoplasm of skin of finger
  • Neoplasm of skin of forearm
  • Neoplasm of skin of groin
  • Neoplasm of skin of hip
  • Neoplasm of skin of lower leg
  • Neoplasm of skin of popliteal area
  • Neoplasm of skin of shoulder
  • Neoplasm of skin of thigh
  • Neoplasm of skin of toe
  • Neoplasm of skin of umbilicus
  • Neoplasm of skin of upper arm
  • Neoplasm of skin of wrist
  • Neoplasm of sweat gland
  • pM1a: Metastasis to skin, subcutaneous tissues, or distant lymph nodes
  • pT4a: Tumor invades anterior orbital contents, skin of cheek, pterygoid plates, infratemporal fossa, cribriform plate, sphenoid or frontal sinuses
  • pT4a: Tumor invades skin, mandible, ear canal, and/or facial nerve
  • pT4a: Tumor invades through cortical bone, inferior alveolar nerve, floor of mouth, or skin of face, i.e., chin or nose
  • pT4a: Tumor invades through cortical bone, into deep
  • Sarcomatous metastasis in skin
  • Secondary malignant neoplasm of adnexa of skin
  • Secondary malignant neoplasm of axilla
  • Secondary malignant neoplasm of cheek
  • Secondary malignant neoplasm of chest wall
  • Secondary malignant neoplasm of forearm
  • Secondary malignant neoplasm of hand
  • Secondary malignant neoplasm of inguinal region
  • Secondary malignant neoplasm of jaw
  • Secondary malignant neoplasm of lip
  • Secondary malignant neoplasm of lower leg
  • Secondary malignant neoplasm of nose
  • Secondary malignant neoplasm of perianal skin
  • Secondary malignant neoplasm of sebaceous gland
  • Secondary malignant neoplasm of shoulder
  • Secondary malignant neoplasm of skin
  • Secondary malignant neoplasm of skin of abdomen
  • Secondary malignant neoplasm of skin of ankle
  • Secondary malignant neoplasm of skin of axilla
  • Secondary malignant neoplasm of skin of back
  • Secondary malignant neoplasm of skin of breast
  • Secondary malignant neoplasm of skin of buttock
  • Secondary malignant neoplasm of skin of cheek
  • Secondary malignant neoplasm of skin of chest
  • Secondary malignant neoplasm of skin of chin
  • Secondary malignant neoplasm of skin of ear
  • Secondary malignant neoplasm of skin of elbow
  • Secondary malignant neoplasm of skin of external auditory canal
  • Secondary malignant neoplasm of skin of eyebrow
  • Secondary malignant neoplasm of skin of eyelid
  • Secondary malignant neoplasm of skin of face
  • Secondary malignant neoplasm of skin of finger
  • Secondary malignant neoplasm of skin of foot
  • Secondary malignant neoplasm of skin of forearm
  • Secondary malignant neoplasm of skin of forehead
  • Secondary malignant neoplasm of skin of groin
  • Secondary malignant neoplasm of skin of hand
  • Secondary malignant neoplasm of skin of head
  • Secondary malignant neoplasm of skin of hip
  • Secondary malignant neoplasm of skin of hip and leg
  • Secondary malignant neoplasm of skin of knee
  • Secondary malignant neoplasm of skin of lip
  • Secondary malignant neoplasm of skin of lower leg
  • Secondary malignant neoplasm of skin of lower limb
  • Secondary malignant neoplasm of skin of neck
  • Secondary malignant neoplasm of skin of nose
  • Secondary malignant neoplasm of skin of perineum
  • Secondary malignant neoplasm of skin of popliteal area
  • Secondary malignant neoplasm of skin of scalp
  • Secondary malignant neoplasm of skin of shoulder
  • Secondary malignant neoplasm of skin of shoulder and arm
  • Secondary malignant neoplasm of skin of temporal region
  • Secondary malignant neoplasm of skin of thigh
  • Secondary malignant neoplasm of skin of toe
  • Secondary malignant neoplasm of skin of trunk
  • Secondary malignant neoplasm of skin of umbilicus
  • Secondary malignant neoplasm of skin of upper arm
  • Secondary malignant neoplasm of skin of upper limb
  • Secondary malignant neoplasm of skin of wrist
  • Secondary malignant neoplasm of soft tissues of axilla
  • Secondary malignant neoplasm of soft tissues of buttock
  • Secondary malignant neoplasm of soft tissues of face
  • Secondary malignant neoplasm of soft tissues of thorax
  • Secondary malignant neoplasm of sweat gland
  • Secondary malignant neoplasm of thigh
  • Secondary malignant neoplasm of upper arm
  • Small cell carcinoma metastatic to skin
  • T4: Aerodigestive tract tumor with intracranial extension, orbital extension including apex, involving sphenoid and/or frontal sinus and/or skin of nose
  • T4: Breast tumor of any size with direct extension to chest wall or skin
  • T4: Lip: Tumor invades adjacent structures
  • T4: Oral Cavity: Tumor invades adjacent structures
  • T4d: Inflammatory carcinoma
  • T4d: Inflammatory carcinoma of breast with involvement of skin and chest wall by carcinoma
  • T-cell chronic lymphocytic leukemia
  • T-cell leukemic infiltration of skin
  • Tumor invades dermis
  • Tumor invades skin
  • Tumor invasion limited to skin
  • Tumor of unknown origin
  • Tumor of unknown origin or ill-defined site

Tabular List of Diseases and Injuries

The Tabular List of Diseases and Injuries is a list of ICD-10 codes, organized "head to toe" into chapters and sections with guidance for inclusions, exclusions, descriptions and more. The following references for the code C79.2 are found in the tabular index:

  • Type 1 Excludes Notes:
    • secondary Merkel cell carcinoma (C7B.1)

Table of Neoplasms

The code C79.2 is included in the table of neoplasms by anatomical site. For each site there are six possible code numbers according to whether the neoplasm in question is malignant, benign, in situ, of uncertain behavior, or of unspecified nature. The description of the neoplasm will often indicate which of the six columns is appropriate.

Where such descriptors are not present, the remainder of the Index should be consulted where guidance is given to the appropriate column for each morphological (histological) variety listed. However, the guidance in the Index can be overridden if one of the descriptors mentioned above is present.

The Tabular must be reviewed for the complete diagnosis code.

Neoplasm, neoplastic Malignant
Primary
Malignant
Secondary
CaInSitu Benign Uncertain
Behavior
Unspecified
Behavior
»abdomen, abdominal
  »wall [See Also: Neoplasm, abdomen, wall, skin]
C44.509C79.2D04.5D23.5D48.5D49.2
»ala nasi (external) [See Also: Neoplasm, skin, nose]
C44.301C79.2D04.39D23.39D48.5D49.2
»anus, anal
  »margin [See Also: Neoplasm, anus, skin]
C44.500C79.2D04.5D23.5D48.5D49.2
»anus, anal
  »skin
C44.500C79.2D04.5D23.5D48.5D49.2
»auditory
C44.20C79.2D04.2D23.2D48.5D49.2
»auditory
  »canal (external) (skin)
C44.20C79.2D04.2D23.2D48.5D49.2
»auricle, ear [See Also: Neoplasm, skin, ear]
C44.20C79.2D04.2D23.2D48.5D49.2
»auricular canal (external) [See Also: Neoplasm, skin, ear]
C44.20C79.2D04.2D23.2D48.5D49.2
»axilla, axillary
  »fold [See Also: Neoplasm, skin, trunk]
C44.509C79.2D04.5D23.5D48.5D49.2
»breast (connective tissue) (glandular tissue) (soft parts)
  »mastectomy site (skin) [See Also: Neoplasm, breast, skin]
C44.501C79.2
»breast (connective tissue) (glandular tissue) (soft parts)
  »skin
C44.501C79.2D04.5D23.5D48.5D49.2
»brow
C44.309C79.2D04.39D23.39D48.5D49.2
»canal
  »auditory (external) [See Also: Neoplasm, skin, ear]
C44.20C79.2D04.2D23.2D48.5D49.2
»canal
  »auricular (external) [See Also: Neoplasm, skin, ear]
C44.20C79.2D04.2D23.2D48.5D49.2
»canthus (eye) (inner) (outer)
C44.10C79.2D04.1D23.1D48.5D49.2
»cheek
  »external
C44.309C79.2D04.39D23.39D48.5D49.2
»chin
C44.309C79.2D04.39D23.39D48.5D49.2
»columnella [See Also: Neoplasm, skin, face]
C44.390C79.2D04.39D23.39D48.5D49.2
»concha [See Also: Neoplasm, skin, ear]
C44.20C79.2D04.2D23.2D48.5D49.2
»connective tissue NEC
  »skin (dermis) NEC [See Also: Neoplasm, skin, by site]
C44.90C79.2D04.9D23.9D48.5D49.2
»ear (external) [See Also: Neoplasm, skin, ear]
C44.20C79.2D04.2D23.2D48.5D49.2
»ear (external) [See Also: Neoplasm, skin, ear]
  »auricle or auris [See Also: Neoplasm, skin, ear]
C44.20C79.2D04.2D23.2D48.5D49.2
»ear (external) [See Also: Neoplasm, skin, ear]
  »canal, external [See Also: Neoplasm, skin, ear]
C44.20C79.2D04.2D23.2D48.5D49.2
»ear (external) [See Also: Neoplasm, skin, ear]
  »external meatus [See Also: Neoplasm, skin, ear]
C44.20C79.2D04.2D23.2D48.5D49.2
»ear (external) [See Also: Neoplasm, skin, ear]
  »lobule [See Also: Neoplasm, skin, ear]
C44.20C79.2D04.2D23.2D48.5D49.2
»ear (external) [See Also: Neoplasm, skin, ear]
  »skin
C44.20C79.2D04.2D23.2D48.5D49.2
»earlobe
C44.20C79.2D04.2D23.2D48.5D49.2
»external
C44.20C79.2D04.2D23.2D48.5D49.2
»external
  »meatus (ear) [See Also: Neoplasm, skin, ear]
C44.20C79.2D04.2D23.2D48.5D49.2
»eyebrow
C44.309C79.2D04.39D23.39D48.5D49.2
»forehead (skin)
C44.309C79.2D04.39D23.39D48.5D49.2
»helix [See Also: Neoplasm, skin, ear]
C44.20C79.2D04.2D23.2D48.5D49.2
»jaw
  »skin [See Also: Neoplasm, skin, face]
C44.309C79.2D04.39D23.39D48.5D49.2
»lid (lower) (upper)
C44.10C79.2D04.1D23.1D48.5D49.2
»lip
  »skin (commissure) (lower) (upper)
C44.00C79.2D04.0D23.0D48.5D49.2
»mastectomy site (skin) [See Also: Neoplasm, breast, skin]
C44.501C79.2
»meatus external (ear) [See Also: Neoplasm, skin, ear]
C44.20C79.2D04.2D23.2D48.5D49.2
»meibomian gland
C44.10C79.2D04.1D23.1D48.5D49.2
»nail [See Also: Neoplasm, skin, limb]
C44.90C79.2D04.9D23.9D48.5D49.2
»nail [See Also: Neoplasm, skin, limb]
  »finger [See Also: Neoplasm, skin, limb, upper]
C44.60C79.2D04.6D23.6D48.5D49.2
»nail [See Also: Neoplasm, skin, limb]
  »toe [See Also: Neoplasm, skin, limb, lower]
C44.70C79.2D04.7D23.7D48.5D49.2
»nasolabial groove [See Also: Neoplasm, skin, face]
C44.309C79.2D04.39D23.39D48.5D49.2
»nates [See Also: Neoplasm, skin, trunk]
C44.509C79.2D04.5D23.5D48.5D49.2
»nose, nasal
  »ala (external) (nasi) [See Also: Neoplasm, nose, skin]
C44.301C79.2D04.39D23.39D48.5D49.2
»nose, nasal
  »external (skin) [See Also: Neoplasm, nose, skin]
C44.301C79.2D04.39D23.39D48.5D49.2
»nose, nasal
  »skin
C44.301C79.2D04.39D23.39D48.5D49.2
»palpebra
C44.10C79.2D04.1D23.1D48.5D49.2
»perianal (skin) [See Also: Neoplasm, anus, skin]
C44.500C79.2D04.5D23.5D48.5D49.2
»pinna (ear) NEC [See Also: Neoplasm, skin, ear]
C44.20C79.2D04.2D23.2D48.5D49.2
»scalp
C44.40C79.2D04.4D23.4D48.5D49.2
»scar NEC [See Also: Neoplasm, skin, by site]
C44.90C79.2D04.9D23.9D48.5D49.2
»skin NOS
C44.90C79.2D04.9D23.9D48.5D49.2
»skin NOS
  »abdominal wall
C44.509C79.2D04.5D23.5D48.5D49.2
»skin NOS
  »ala nasi [See Also: Neoplasm, nose, skin]
C44.301C79.2D04.39D23.39D48.5D49.2
»skin NOS
  »ankle [See Also: Neoplasm, skin, limb, lower]
C44.70C79.2D04.7D23.7D48.5D49.2
»skin NOS
  »antecubital space [See Also: Neoplasm, skin, limb, upper]
C44.60C79.2D04.6D23.6D48.5D49.2
»skin NOS
  »anus
C44.500C79.2D04.5D23.5D48.5D49.2
»skin NOS
  »arm [See Also: Neoplasm, skin, limb, upper]
C44.60C79.2D04.6D23.6D48.5D49.2
»skin NOS
  »auditory canal (external) [See Also: Neoplasm, skin, ear]
C44.20C79.2D04.2D23.2D48.5D49.2
»skin NOS
  »auricle (ear) [See Also: Neoplasm, skin, ear]
C44.20C79.2D04.2D23.2D48.5D49.2
»skin NOS
  »auricular canal (external) [See Also: Neoplasm, skin, ear]
C44.20C79.2D04.2D23.2D48.5D49.2
»skin NOS
  »axilla, axillary fold [See Also: Neoplasm, skin, trunk]
C44.509C79.2D04.5D23.5D48.5D49.2
»skin NOS
  »back [See Also: Neoplasm, skin, trunk]
C44.509C79.2D04.5D23.5D48.5D49.2
»skin NOS
  »breast
C44.501C79.2D04.5D23.5D48.5D49.2
»skin NOS
  »brow [See Also: Neoplasm, skin, face]
C44.309C79.2D04.39D23.39D48.5D49.2
»skin NOS
  »buttock [See Also: Neoplasm, skin, trunk]
C44.509C79.2D04.5D23.5D48.5D49.2
»skin NOS
  »calf [See Also: Neoplasm, skin, limb, lower]
C44.70C79.2D04.7D23.7D48.5D49.2
»skin NOS
  »canthus (eye) (inner) (outer)
C44.10C79.2D04.1D23.1D48.5D49.2
»skin NOS
  »cervical region [See Also: Neoplasm, skin, neck]
C44.40C79.2D04.4D23.4D48.5D49.2
»skin NOS
  »cheek (external) [See Also: Neoplasm, skin, face]
C44.309C79.2D04.39D23.39D48.5D49.2
»skin NOS
  »chest (wall) [See Also: Neoplasm, skin, trunk]
C44.509C79.2D04.5D23.5D48.5D49.2
»skin NOS
  »chin [See Also: Neoplasm, skin, face]
C44.309C79.2D04.39D23.39D48.5D49.2
»skin NOS
  »clavicular area [See Also: Neoplasm, skin, trunk]
C44.509C79.2D04.5D23.5D48.5D49.2
»skin NOS
  »columnella [See Also: Neoplasm, skin, face]
C44.309C79.2D04.39D23.39D48.5D49.2
»skin NOS
  »concha [See Also: Neoplasm, skin, ear]
C44.20C79.2D04.2D23.2D48.5D49.2
»skin NOS
  »ear (external)
C44.20C79.2D04.2D23.2D48.5D49.2
»skin NOS
  »elbow [See Also: Neoplasm, skin, limb, upper]
C44.60C79.2D04.6D23.6D48.5D49.2
»skin NOS
  »eyebrow [See Also: Neoplasm, skin, face]
C44.309C79.2D04.39D23.39D48.5D49.2
»skin NOS
  »eyelid
C44.10C79.2D04.1D23.1D48.5D49.2
»skin NOS
  »face NOS
C44.300C79.2D04.30D23.30D48.5D49.2
»skin NOS
  »finger [See Also: Neoplasm, skin, limb, upper]
C44.60C79.2D04.6D23.6D48.5D49.2
»skin NOS
  »flank [See Also: Neoplasm, skin, trunk]
C44.509C79.2D04.5D23.5D48.5D49.2
»skin NOS
  »foot [See Also: Neoplasm, skin, limb, lower]
C44.70C79.2D04.7D23.7D48.5D49.2
»skin NOS
  »forearm [See Also: Neoplasm, skin, limb, upper]
C44.60C79.2D04.6D23.6D48.5D49.2
»skin NOS
  »forehead [See Also: Neoplasm, skin, face]
C44.309C79.2D04.39D23.39D48.5D49.2
»skin NOS
  »glabella [See Also: Neoplasm, skin, face]
C44.309C79.2D04.39D23.39D48.5D49.2
»skin NOS
  »gluteal region [See Also: Neoplasm, skin, trunk]
C44.509C79.2D04.5D23.5D48.5D49.2
»skin NOS
  »groin [See Also: Neoplasm, skin, trunk]
C44.509C79.2D04.5D23.5D48.5D49.2
»skin NOS
  »hand [See Also: Neoplasm, skin, limb, upper]
C44.60C79.2D04.6D23.6D48.5D49.2
»skin NOS
  »head NEC [See Also: Neoplasm, skin, scalp]
C44.40C79.2D04.4D23.4D48.5D49.2
»skin NOS
  »heel [See Also: Neoplasm, skin, limb, lower]
C44.70C79.2D04.7D23.7D48.5D49.2
»skin NOS
  »helix [See Also: Neoplasm, skin, ear]
C44.20C79.2D04.2D23.2D48.5D49.2
»skin NOS
  »hip [See Also: Neoplasm, skin, limb, lower]
C44.70C79.2D04.7D23.7D48.5D49.2
»skin NOS
  »infraclavicular region [See Also: Neoplasm, skin, trunk]
C44.509C79.2D04.5D23.5D48.5D49.2
»skin NOS
  »inguinal region [See Also: Neoplasm, skin, trunk]
C44.509C79.2D04.5D23.5D48.5D49.2
»skin NOS
  »jaw [See Also: Neoplasm, skin, face]
C44.309C79.2D04.39D23.39D48.5D49.2
»skin NOS
  »knee [See Also: Neoplasm, skin, limb, lower]
C44.70C79.2D04.7D23.7D48.5D49.2
»skin NOS
  »leg [See Also: Neoplasm, skin, limb, lower]
C44.70C79.2D04.7D23.7D48.5D49.2
»skin NOS
  »lid (lower) (upper)
C44.10C79.2D04.1D23.1D48.5D49.2
»skin NOS
  »limb NEC
C44.90C79.2D04.9D23.9D48.5D49.2
»skin NOS
  »limb NEC
    »lower
C44.70C79.2D04.7D23.7D48.5D49.2
»skin NOS
  »limb NEC
    »upper
C44.60C79.2D04.6D23.6D48.5D49.2
»skin NOS
  »lip (lower) (upper)
C44.00C79.2D04.0D23.0D48.5D49.2
»skin NOS
  »mastectomy site (skin) [See Also: Neoplasm, skin, breast]
C44.501C79.2
»skin NOS
  »meatus, acoustic (external) [See Also: Neoplasm, skin, ear]
C44.20C79.2D04.2D23.2D48.5D49.2
»skin NOS
  »nates [See Also: Neoplasm, skin, trunk]
C44.509C79.2D04.5D23.5D48.5D49.2
»skin NOS
  »neck
C44.40C79.2D04.4D23.4D48.5D49.2
»skin NOS
  »nose (external) [See Also: Neoplasm, nose, skin]
C44.301C79.2D04.39D23.39D48.5D49.2
»skin NOS
  »palm [See Also: Neoplasm, skin, limb, upper]
C44.60C79.2D04.6D23.6D48.5D49.2
»skin NOS
  »palpebra
C44.10C79.2D04.1D23.1D48.5D49.2
»skin NOS
  »perianal [See Also: Neoplasm, skin, anus]
C44.500C79.2D04.5D23.5D48.5D49.2
»skin NOS
  »perineum [See Also: Neoplasm, skin, anus]
C44.500C79.2D04.5D23.5D48.5D49.2
»skin NOS
  »pinna [See Also: Neoplasm, skin, ear]
C44.20C79.2D04.2D23.2D48.5D49.2
»skin NOS
  »plantar [See Also: Neoplasm, skin, limb, lower]
C44.70C79.2D04.7D23.7D48.5D49.2
»skin NOS
  »popliteal fossa or space [See Also: Neoplasm, skin, limb, lower]
C44.70C79.2D04.7D23.7D48.5D49.2
»skin NOS
  »pubes [See Also: Neoplasm, skin, trunk]
C44.509C79.2D04.5D23.5D48.5D49.2
»skin NOS
  »sacrococcygeal region [See Also: Neoplasm, skin, trunk]
C44.509C79.2D04.5D23.5D48.5D49.2
»skin NOS
  »scalp
C44.40C79.2D04.4D23.4D48.5D49.2
»skin NOS
  »scapular region [See Also: Neoplasm, skin, trunk]
C44.509C79.2D04.5D23.5D48.5D49.2
»skin NOS
  »shoulder [See Also: Neoplasm, skin, limb, upper]
C44.60C79.2D04.6D23.6D48.5D49.2
»skin NOS
  »sole (foot) [See Also: Neoplasm, skin, limb, lower]
C44.70C79.2D04.7D23.7D48.5D49.2
»skin NOS
  »specified sites NEC
C44.80C79.2D04.8D23.9D48.5D49.2
»skin NOS
  »submammary fold [See Also: Neoplasm, skin, trunk]
C44.509C79.2D04.5D23.5D48.5D49.2
»skin NOS
  »supraclavicular region [See Also: Neoplasm, skin, neck]
C44.40C79.2D04.4D23.4D48.5D49.2
»skin NOS
  »temple [See Also: Neoplasm, skin, face]
C44.309C79.2D04.39D23.39D48.5D49.2
»skin NOS
  »thigh [See Also: Neoplasm, skin, limb, lower]
C44.70C79.2D04.7D23.7D48.5D49.2
»skin NOS
  »thoracic wall [See Also: Neoplasm, skin, trunk]
C44.509C79.2D04.5D23.5D48.5D49.2
»skin NOS
  »thumb [See Also: Neoplasm, skin, limb, upper]
C44.60C79.2D04.6D23.6D48.5D49.2
»skin NOS
  »toe [See Also: Neoplasm, skin, limb, lower]
C44.70C79.2D04.7D23.7D48.5D49.2
»skin NOS
  »tragus [See Also: Neoplasm, skin, ear]
C44.20C79.2D04.2D23.2D48.5D49.2
»skin NOS
  »trunk
C44.509C79.2D04.5D23.5D48.5D49.2
»skin NOS
  »umbilicus [See Also: Neoplasm, skin, trunk]
C44.509C79.2D04.5D23.5D48.5D49.2
»skin NOS
  »wrist [See Also: Neoplasm, skin, limb, upper]
C44.60C79.2D04.6D23.6D48.5D49.2
»sudoriferous, sudoriparous gland, site unspecified
C44.90C79.2D04.9D23.9D48.5D49.2
»sweat gland (apocrine) (eccrine), site unspecified
C44.90C79.2D04.9D23.9D48.5D49.2
»temple (skin) [See Also: Neoplasm, skin, face]
C44.309C79.2D04.39D23.39D48.5D49.2
»temporal
  »region
    »skin [See Also: Neoplasm, skin, face]
C44.309C79.2D04.39D23.39D48.5D49.2
»tragus [See Also: Neoplasm, skin, ear]
C44.20C79.2D04.2D23.2D48.5D49.2
»umbilicus, umbilical [See Also: Neoplasm, skin, trunk]
C44.509C79.2D04.5D23.5D48.5D49.2

Information for Patients


Skin Cancer

Skin cancer is the most common form of cancer in the United States. The two most common types are basal cell cancer and squamous cell cancer. They usually form on the head, face, neck, hands, and arms. Another type of skin cancer, melanoma, is more dangerous but less common.

Anyone can get skin cancer, but it is more common in people who

  • Spend a lot of time in the sun or have been sunburned
  • Have light-colored skin, hair and eyes
  • Have a family member with skin cancer
  • Are over age 50

You should have your doctor check any suspicious skin markings and any changes in the way your skin looks. Treatment is more likely to work well when cancer is found early. If not treated, some types of skin cancer cells can spread to other tissues and organs. Treatments include surgery, radiation therapy, chemotherapy, photodynamic therapy (PDT), and biologic therapy. PDT uses a drug and a type of laser light to kill cancer cells. Biologic therapy boosts your body's own ability to fight cancer.

NIH: National Cancer Institute

  • Basal cell carcinoma (Medical Encyclopedia)
  • Mohs micrographic surgery (Medical Encyclopedia)
  • Skin lesion biopsy (Medical Encyclopedia)
  • Skin self-exam (Medical Encyclopedia)
  • Squamous cell skin cancer (Medical Encyclopedia)
  • What to Know about External Beam Radiation Therapy - NIH - Easy-to-Read (National Cancer Institute)

[Learn More]

ICD-10 Footnotes

General Equivalence Map Definitions
The ICD-10 and ICD-9 GEMs are used to facilitate linking between the diagnosis codes in ICD-9-CM and the new ICD-10-CM code set. The GEMs are the raw material from which providers, health information vendors and payers can derive specific applied mappings to meet their needs.

  • Approximate Flag - The approximate flag is on, indicating that the relationship between the code in the source system and the code in the target system is an approximate equivalent.
  • No Map Flag - The no map flag indicates that a code in the source system is not linked to any code in the target system.
  • Combination Flag - The combination flag indicates that more than one code in the target system is required to satisfy the full equivalent meaning of a code in the source system.

Index of Diseases and Injuries Definitions

  • And - The word "and" should be interpreted to mean either "and" or "or" when it appears in a title.
  • Code also note - A "code also" note instructs that two codes may be required to fully describe a condition, but this note does not provide sequencing direction.
  • Code first - Certain conditions have both an underlying etiology and multiple body system manifestations due to the underlying etiology. For such conditions, the ICD-10-CM has a coding convention that requires the underlying condition be sequenced first followed by the manifestation. Wherever such a combination exists, there is a "use additional code" note at the etiology code, and a "code first" note at the manifestation code. These instructional notes indicate the proper sequencing order of the codes, etiology followed by manifestation.
  • Type 1 Excludes Notes - A type 1 Excludes note is a pure excludes note. It means "NOT CODED HERE!" An Excludes1 note indicates that the code excluded should never be used at the same time as the code above the Excludes1 note. An Excludes1 is used when two conditions cannot occur together, such as a congenital form versus an acquired form of the same condition.
  • Type 2 Excludes Notes - A type 2 Excludes note represents "Not included here". An excludes2 note indicates that the condition excluded is not part of the condition represented by the code, but a patient may have both conditions at the same time. When an Excludes2 note appears under a code, it is acceptable to use both the code and the excluded code together, when appropriate.
  • Includes Notes - This note appears immediately under a three character code title to further define, or give examples of, the content of the category.
  • Inclusion terms - List of terms is included under some codes. These terms are the conditions for which that code is to be used. The terms may be synonyms of the code title, or, in the case of "other specified" codes, the terms are a list of the various conditions assigned to that code. The inclusion terms are not necessarily exhaustive. Additional terms found only in the Alphabetic Index may also be assigned to a code.
  • NEC "Not elsewhere classifiable" - This abbreviation in the Alphabetic Index represents "other specified". When a specific code is not available for a condition, the Alphabetic Index directs the coder to the "other specified” code in the Tabular List.
  • NOS "Not otherwise specified" - This abbreviation is the equivalent of unspecified.
  • See - The "see" instruction following a main term in the Alphabetic Index indicates that another term should be referenced. It is necessary to go to the main term referenced with the "see" note to locate the correct code.
  • See Also - A "see also" instruction following a main term in the Alphabetic Index instructs that there is another main term that may also be referenced that may provide additional Alphabetic Index entries that may be useful. It is not necessary to follow the "see also" note when the original main term provides the necessary code.
  • 7th Characters - Certain ICD-10-CM categories have applicable 7th characters. The applicable 7th character is required for all codes within the category, or as the notes in the Tabular List instruct. The 7th character must always be the 7th character in the data field. If a code that requires a 7th character is not 6 characters, a placeholder X must be used to fill in the empty characters.
  • With - The word "with" should be interpreted to mean "associated with" or "due to" when it appears in a code title, the Alphabetic Index, or an instructional note in the Tabular List. The word "with" in the Alphabetic Index is sequenced immediately following the main term, not in alphabetical order.