C48 – Malignant neoplasm of retroperitoneum and peritoneum

ICD-10-CM 2027 diagnosis code · Malignant neoplasms of mesothelial and soft tissue

Non-billable header

ICD-10-CM code C48
Code
C48 (claims format: C48)
Description
Malignant neoplasm of retroperitoneum and peritoneum
Billable
No – use a more specific code below
Valid for
Dates of service October 1, 2026 – September 30, 2027 (FY2027)
Chapter
2. Neoplasms (C00-D49)
Block
C45-C49 Malignant neoplasms of mesothelial and soft tissue

Billable codes under C48

C48 is a header code and cannot be used on claims. Choose the most specific code:

Notes for C48

Excludes1 (not coded here):
  • Kaposi's sarcoma of connective tissue (C46.1)
  • mesothelioma (C45.-)

Frequently asked questions

What is ICD-10 code C48?

C48 is the ICD-10-CM code for malignant neoplasm of retroperitoneum and peritoneum, in the block C45-C49 (Malignant neoplasms of mesothelial and soft tissue).

Is C48 a billable code?

No. C48 is a header code with more specific child codes; report one of the billable codes listed above.

Source: CDC/NCHS ICD-10-CM FY2027 code files, tabular list and index. Reference only – code assignment must follow the official ICD-10-CM guidelines and documentation in the medical record.