Specific code 2012 ICD-9-CM Diagnosis Code 158.9
Malignant neoplasm of peritoneum, unspecified
  • Short description: Mal neo peritoneum NOS.
  • ICD-9-CM 158.9 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 158.9 is a billable medical code that can be used to specify a diagnosis on a reimbursement claim.
  • You are viewing the 2012 version of ICD-9-CM 158.9.
  • More recent version(s) of ICD-9-CM 158.9: 2013 2014 2015.
Disease Synonyms
  • Cancer of the peritoneum
  • Cancer of the peritoneum, mesothelioma
  • Malignant mesothelioma of peritoneum (disorder)
  • Malignant mesothelioma, peritoneum
  • Mesothelioma of peritoneum
  • Peritoneal cancer
  • Primary malignant neoplasm of the peritoneum
Convert to ICD-10-CM: 158.9 converts directly to:
  • 2015 ICD-10-CM C48.2 Malignant neoplasm of peritoneum, unspecified
ICD-9-CM codes are used in medical billing and coding to describe diseases, injuries, symptoms and conditions. ICD-9-CM 158.9 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 2012 ICD-9-CM Index or use the search engine at the top of this page to lookup any code.