2024 ICD-10-CM Diagnosis Code C49.9

Malignant neoplasm of connective and soft tissue, unspecified

  • C49.9 is a billable/specific ICD-10-CM code that can be used to indicate a diagnosis for reimbursement purposes.
  • Short description: Malignant neoplasm of connective and soft tissue, unsp
  • The 2024 edition of ICD-10-CM C49.9 became effective on October 1, 2023.
  • This is the American ICD-10-CM version of C49.9 – other international versions of ICD-10 C49.9 may differ.

The following code(s) above C49.9 contain annotation back-references

 that may be applicable to C49.9:

  • C00-D49  Neoplasms
  • C49  Malignant neoplasm of other connective and soft tissue

Approximate Synonyms

  • Angiosarcoma
  • Atypical fibroxanthoma of skin
  • Atypical fibroxanthoma, skin
  • Cancer of the soft tissue
  • Cancer of the synovium, sarcoma
  • Cancer, angiosarcoma
  • Cancer, leiomyosarcoma
  • Cancer, liposarcoma
  • Cancer, malignant fibrous histiocytoma
  • Cancer, myxoid liposarcoma
  • Cancer, rhabdomyosarcoma
  • Cancer, sarcoma
  • Ganglioneuroblastoma
  • Leiomyosarcoma
  • Liposarcoma
  • Malignant fibrous histiocytoma
  • Malignant neoplasm of soft tissue
  • Myxoid liposarcoma
  • Rhabdomyosarcoma
  • Sarcoma
  • Sarcoma of soft tissue
  • Sarcoma, soft tissue
  • Synovial sarcoma

ICD-10-CM C49.9 is grouped within Diagnostic Related Group(s) (MS-DRG v41.0):

  • 542 Pathological fractures and musculoskeletal and connective tissue malignancy with mcc
  • 543 Pathological fractures and musculoskeletal and connective tissue malignancy with cc
  • 544 Pathological fractures and musculoskeletal and connective tissue malignancy without cc/mcc

Convert C49.9 to ICD-9-CMCode History

  • 2016 (effective 10/1/2015): New code (first year of non-draft ICD-10-CM)
  • 2017 (effective 10/1/2016): No change
  • 2018 (effective 10/1/2017): No change
  • 2019 (effective 10/1/2018): No change
  • 2020 (effective 10/1/2019): No change
  • 2021 (effective 10/1/2020): No change
  • 2022 (effective 10/1/2021): No change
  • 2023 (effective 10/1/2022): No change
  • 2024 (effective 10/1/2023): No change