Home > 2015 ICD-9-CM Diagnosis Codes > Neoplasms 140-239 > Malignant Neoplasm Of Digestive Organs And Peritoneum 150-159 > Malignant neoplasm of retroperitoneum and peritoneum 158-
Specific code 2015 ICD-9-CM Diagnosis Code 158.9
Malignant neoplasm of peritoneum, unspecified
  • 2015
  • Billable Thru Sept 30/2015
  • Non-Billable On/After Oct 1/2015

  • ICD-9-CM 158.9 is a billable medical code that can be used to indicate a diagnosis on a reimbursement claim, however, 158.9 should only be used for claims with a date of service on or before September 30, 2015. For claims with a date of service on or after October 1, 2015, use an equivalent ICD-10-CM code (or codes).
Convert to ICD-10-CM: 158.9 converts directly to:
  • 2015/16 ICD-10-CM C48.2 Malignant neoplasm of peritoneum, unspecified
Approximate 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
Clinical Information
  • A primary or metastatic malignant neoplasm involving the peritoneum. Representative examples include carcinoma and malignant mesothelioma
  • Cancer of the tissue that lines the abdominal wall and covers organs in the abdomen
 158.8 ICD9Data.com 159 
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 2015 ICD-9-CM Index or use the search engine at the top of this page to lookup any code.
Free ICD-9-CM Codes
Site Information
Free ICD-10-CM/PCS Codes
Free HCPCS Codes