C48 ICD-10-CM Code: Malignant neoplasm of retroperitoneum and peritoneum
A clear reference for the official code description, hierarchy, and related coding information from the FY 2027 U.S. release.
Official description
C48Malignant neoplasm of retroperitoneum and peritoneum
ICD-10-CM diagnosis code · United States clinical modification
Where C48 sits
- 1
Chapter 2
Neoplasms (C00-D49)
- 2
Section
Malignant neoplasms of mesothelial and soft tissue (C45-C49)
- 3
Category C48
Malignant neoplasm of retroperitoneum and peritoneum
- 4
Code C48
Malignant neoplasm of retroperitoneum and peritoneum
Codes under C48
C48 is a non-billable category. Choose the child code that best matches the documented diagnosis.
Notes for this code
Inclusion terms
No inclusion terms are listed for C48.
Code first
No “code first” instruction is listed for C48.
Use additional code
No “use additional code” instruction is listed for C48.
Excludes1
Conditions that should not be reported together with this code.
- Kaposi's sarcoma of connective tissue (C46.1)
- mesothelioma (C45.-)
Excludes2
Conditions not included here that may be reported separately when present.
No Excludes2 note is listed for C48.
Source and release
- Data release
- U.S. ICD-10-CM · FY 2027
- Effective date
- Oct 1, 2026
- Publisher
- Vero Scribe Inc.
This reference is generated from Vero’s ICD-10-CM description, hierarchy, and code-note dataset. The visible content and structured data share that source.
Frequently asked questions
What does ICD-10-CM code C48 mean?
C48 is the FY 2027 U.S. ICD-10-CM code for “Malignant neoplasm of retroperitoneum and peritoneum.”
Is C48 a billable or specific ICD-10-CM code?
No. C48 has more specific child codes in the FY 2027 reference data. Select the code that matches the documentation and confirm the active code set and payer requirements.
Where is C48 located in ICD-10-CM?
C48 is listed in Chapter 2, Neoplasms (C00-D49), within Malignant neoplasms of mesothelial and soft tissue (C45-C49) (C45–C49), under category C48, Malignant neoplasm of retroperitoneum and peritoneum.
What coding notes are listed for C48?
No inclusion terms are listed for C48 in this reference record. No code-first instruction is listed. Excludes1 notes: Kaposi's sarcoma of connective tissue (C46.1); mesothelioma (C45.-). No Excludes2 note is listed.