Specific code 2014 ICD-9-CM Diagnosis Code 171.9
Malignant neoplasm of connective and other soft tissue, site unspecified
  • Billable Code
  • Short description: Mal neo soft tissue NOS.
  • ICD-9-CM 171.9 will be replaced by an equivalent ICD-10-CM code (or codes) when the United States transitions from ICD-9-CM to ICD-10-CM on October 1, 2015.
  • ICD-9-CM 171.9 is a billable medical code that can be used to specify a diagnosis on a reimbursement claim.
Disease Synonyms
  • Adipocytic liposarcoma
  • Alveolar rhabdomyosarcoma
  • Alveolar soft part sarcoma
  • Angiosarcoma
  • Atypical fibroxanthoma
  • Atypical fibroxanthoma of skin
  • Atypical fibroxanthoma, skin
  • Autonomic nervous system cancer
  • Botryoid rhabdomyosarcoma
  • Cancer of the peripheral nerve
  • Cancer of the synovium, sarcoma
  • Cancer, angiosarcoma
  • Cancer, autonomic nervous system
  • Cancer, leiomyosarcoma
  • Cancer, liposarcoma
  • Cancer, malignant fibrous histiocytoma
  • Cancer, myxoid liposarcoma
  • Cancer, rhabdomyosarcoma
  • Cancer, sarcoma
  • Carcinoma of bone, connective tissue, skin and breast
  • Cutaneous leiomyosarcoma with granular cell change
  • Dedifferentiated liposarcoma
  • Embryonal rhabdomyosarcoma
  • Epithelioid leiomyosarcoma of skin
  • Epithelioid malignant nerve sheath tumor
  • Extraskeletal mesenchymal chondrosarcoma
  • Extraskeletal myxoid chondrosarcoma
  • Ganglioneuroblastoma
  • Granulocytic sarcoma affecting skin
  • Histiocytic sarcoma
  • Infantile fibrosarcoma
  • Inflammatory malignant fibrous histiocytoma of skin
  • International neuroblastoma pathology classification: Favorable histology group, patient age 1.5 years up to but less than 5 years, with differentiating neuroblastoma , and low mitosis-karyorrhexis index
  • International neuroblastoma pathology classification: Favorable histology group, patient less than 1.5 years of age, with poorly differentiated neuroblastoma , and low or intermediate mitosis-karyorrhexis index
  • International neuroblastoma staging system stage 1
  • Intravascular angiosarcoma
  • Leiomyosarcoma
  • Liposarcoma
  • Local recurrence of malignant tumor of soft tissue
  • Low-grade fibromyxoid sarcoma
  • Lymphangiosarcoma
  • Malignant fibromatous neoplasm
  • Malignant fibrous histiocytoma
  • Malignant fibrous histiocytoma of skin
  • Malignant granular cell tumor
  • Malignant infiltration of peripheral nerve
  • Malignant infiltration of peripheral nerve plexus
  • Malignant infiltration of soft tissue
  • Malignant lipomatous tumor
  • Malignant melanoma of soft tissues
  • Malignant neoplasm of bone, connective tissue, skin and breast
  • Malignant neoplasm of peripheral nerves and autonomic nervous system
  • Malignant neoplasm of soft tissue
  • Malignant neoplasm of subcutaneous fibrous tissue
  • Malignant peripheral nerve sheath tumor
  • Malignant Triton tumor
  • Malignant tumor of fibrous tissue
  • Malignant tumor of mesothelial tissue
  • Malignant tumor of muscle
  • Malignant tumor of nerve sheath origin
  • Malignant tumor of peripheral nerve
  • Malignant tumor of spinal nerve and sheath
  • Melanotic malignant nerve sheath tumor
  • Metastasis from malignant tumor of soft tissues
  • Metastatic sarcoma
  • Myxoid leiomyosarcoma of skin
  • Myxoid liposarcoma
  • Overlapping malignant neoplasm of soft tissues
  • Peripheral nerve cancer
  • Pleomorphic liposarcoma
  • Pleomorphic rhabdomyosarcoma
  • Primary leiomyosarcoma
  • Primary malignant neoplasm of autonomic nervous system
  • Primary malignant neoplasm of blood vessel
  • Primary malignant neoplasm of muscle
  • Primary malignant neoplasm of peripheral nerve
  • Primary malignant neoplasm of peripheral nerves and peripheral autonomic nervous system
  • Primary malignant neoplasm of soft tissues
  • Rhabdomyosarcoma
  • Rhabdomyosarcoma of connective or soft tissue
  • Round cell liposarcoma
  • Sarcoma
  • Sarcoma of bone and connective tissue
  • Sarcoma of soft tissue
  • Sarcoma, soft tissue
  • Sarcomatous metastasis in skin
  • Sclerosing liposarcoma
  • Spindle cell liposarcoma
  • Spindle cell rhabdomyosarcoma
  • Synovial sarcoma
  • Vaccine-induced fibrosarcoma
Convert to ICD-10-CM: 171.9 converts approximately to:
  • 2014 ICD-10-CM C49.9 Malignant neoplasm of connective and soft tissue, unspecified
ICD-9-CM Volume 2 Index entries containing back-references to 171.9:
  • Sarcomatosis
    • unspecified site (M8800/6) 171.9
ICD-9-CM codes are used in medical billing and coding to describe diseases, injuries, symptoms and conditions. ICD-9-CM 171.9 is one of thousands of ICD-9-CM codes used in healthcare. Although ICD-9-CM and CPT codes are largely numeric, they differ in that CPT codes describe medical procedures and services. Can't find a code? Start at the root of ICD-9-CM, check the 2014 ICD-9-CM Index or use the search engine at the top of this page to lookup any code.