Specific code 2015 ICD-9-CM Diagnosis Code 234.9
Carcinoma in situ, site unspecified
  • 2015
  • Billable Thru Sept 30/2015
  • Non-Billable On/After Oct 1/2015

  • ICD-9-CM 234.9 is a billable medical code that can be used to indicate a diagnosis on a reimbursement claim, however, 234.9 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: 234.9 converts directly to:
  • 2015/16 ICD-10-CM D09.9 Carcinoma in situ, unspecified
Approximate Synonyms
  • Adenocarcinoma in situ in villous adenoma
  • Cancer in situ
  • Carcinoma in situ
Clinical Information
  • (kar-sin-o-ma in sye-too) cancer that involves only the cells in which it began and that has not spread to neighboring tissues
  • A group of abnormal cells that remain in the place where they first formed. They have not spread. These abnormal cells may become cancer and spread into nearby normal tissue
  • A lesion with cytological characteristics associated with invasive carcinoma but the tumor cells are confined to the epithelium of origin, without invasion of the basement membrane
  • A malignant epithelial neoplasm confined to the epithelial layer and without evidence of further tissue invasion
  • A malignant epithelial neoplasm which is confined to the epithelial layer without evidence of further tissue invasion
Applies To
  • Carcinoma in situ NOS
ICD-9-CM codes are used in medical billing and coding to describe diseases, injuries, symptoms and conditions. ICD-9-CM 234.9 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.