ICD-10-CM Codes
C00-D49 Neoplasms
C45-C49 Malignant neoplasms of mesothelial and soft tissue
C48- Malignant neoplasm of retroperitoneum and peritoneum

2019 ICD-10-CM Diagnosis Code C48.0

Malignant neoplasm of retroperitoneum

2016

2017

2018

2019

Billable/Specific Code

C48.0 is a billable/specific ICD-10-CM code that can be used to indicate a diagnosis for reimbursement purposes.
The 2019 edition of ICD-10-CM C48.0 became effective on October 1, 2018.
This is the American ICD-10-CM version of C48.0 - other international versions of ICD-10 C48.0 may differ.

The following code(s) above C48.0 contain annotation back-references

Annotation Back-References

In this context, annotation back-references refer to codes that contain:

Applicable To annotations, or
Code Also annotations, or
Code First annotations, or
Excludes1 annotations, or
Excludes2 annotations, or
Includes annotations, or
Note annotations, or
Use Additional annotations

that may be applicable to C48.0:

C00-D49
2019 ICD-10-CM Range C00-D49
Neoplasms
Note
- Functional activity
- All neoplasms are classified in this chapter, whether they are functionally active or not. An additional code from Chapter 4 may be used, to identify functional activity associated with any neoplasm.
- Morphology [Histology]
- Chapter 2 classifies neoplasms primarily by site (topography), with broad groupings for behavior, malignant, in situ, benign, etc. The Table of Neoplasms should be used to identify the correct topography code. In a few cases, such as for malignant melanoma and certain neuroendocrine tumors, the morphology (histologic type) is included in the category and codes.
- Primary malignant neoplasms overlapping site boundaries
- A primary malignant neoplasm that overlaps two or more contiguous (next to each other) sites should be classified to the subcategory/code .8 ('overlapping lesion'), unless the combination is specifically indexed elsewhere. For multiple neoplasms of the same site that are not contiguous, such as tumors in different quadrants of the same breast, codes for each site should be assigned.
- Malignant neoplasm of ectopic tissue
- Malignant neoplasms of ectopic tissue are to be coded to the site mentioned, e.g., ectopic pancreatic malignant neoplasms are coded to pancreas, unspecified (C25.9).
Neoplasms
C48
ICD-10-CM Diagnosis Code C48
Malignant neoplasm of retroperitoneum and peritoneum
Type 1 Excludes
- Kaposi's sarcoma of connective tissue (C46.1)
- mesothelioma (C45.-)
Malignant neoplasm of retroperitoneum and peritoneum

Approximate Synonyms

Cancer of the retroperitoneum
Cancer of the retroperitoneum pouch
Cancer retroperitoneal soft tissue, sarcoma
Liposarcoma of retroperitoneum
Liposarcoma, retroperitoneum
Primary malignant neoplasm of retroperitoneal pouch
Primary malignant neoplasm of retroperitoneum
Retroperitoneal sarcoma

Clinical Information

A primary or metastatic malignant neoplasm involving the retroperitoneum. The vast majority of cases are carcinomas, lymphomas, or sarcomas.

ICD-10-CM C48.0 is grouped within Diagnostic Related Group(s) (MS-DRG v36.0):

826 Myeloproliferative disorders or poorly differentiated neoplasms with major o.r. Procedure with mcc
827 Myeloproliferative disorders or poorly differentiated neoplasms with major o.r. Procedure with cc
828 Myeloproliferative disorders or poorly differentiated neoplasms with major o.r. Procedure without cc/mcc
829 Myeloproliferative disorders or poorly differentiated neoplasms with other procedure with cc/mcc
830 Myeloproliferative disorders or poorly differentiated neoplasms with other procedure without cc/mcc
843 Other myeloproliferative disorders or poorly differentiated neoplastic diagnoses with mcc
844 Other myeloproliferative disorders or poorly differentiated neoplastic diagnoses with cc
845 Other myeloproliferative disorders or poorly differentiated neoplastic diagnoses without cc/mcc

Convert C48.0 to ICD-9-CM

Code History

2016 (effective 10/1/2015): New code (first year of non-draft ICD-10-CM)
2017 (effective 10/1/2016): No change
2018 (effective 10/1/2017): No change
2019 (effective 10/1/2018): No change

Code annotations containing back-references to C48.0:

Type 2 Excludes: C49

ICD-10-CM Diagnosis Code C49
Malignant neoplasm of other connective and soft tissue
Includes
- malignant neoplasm of blood vessel
- malignant neoplasm of bursa
- malignant neoplasm of cartilage
- malignant neoplasm of fascia
- malignant neoplasm of fat
- malignant neoplasm of ligament, except uterine
- malignant neoplasm of lymphatic vessel
- malignant neoplasm of muscle
- malignant neoplasm of synovia
- malignant neoplasm of tendon (sheath)
Type 1 Excludes
- malignant neoplasm of cartilage (of):
- articular (C40-C41)
- larynx (C32.3)
- nose (C30.0)
- malignant neoplasm of connective tissue of breast (C50.-)
Type 2 Excludes
- Kaposi's sarcoma of soft tissue (C46.1)
- malignant neoplasm of heart (C38.0)
- malignant neoplasm of peripheral nerves and autonomic nervous system (C47.-)
- malignant neoplasm of peritoneum (C48.2)
- malignant neoplasm of retroperitoneum (C48.0)
- malignant neoplasm of uterine ligament (C57.3)
- mesothelioma (C45.-)

ICD-10-CM Codes Adjacent To C48.0

C47.20 Malignant neoplasm of peripheral nerves of unspecified lower limb, including hip

C47.21 Malignant neoplasm of peripheral nerves of right lower limb, including hip

C47.22 Malignant neoplasm of peripheral nerves of left lower limb, including hip

C47.3 Malignant neoplasm of peripheral nerves of thorax

C47.4 Malignant neoplasm of peripheral nerves of abdomen

C47.5 Malignant neoplasm of peripheral nerves of pelvis

C47.6 Malignant neoplasm of peripheral nerves of trunk, unspecified

C47.8 Malignant neoplasm of overlapping sites of peripheral nerves and autonomic nervous system

C47.9 Malignant neoplasm of peripheral nerves and autonomic nervous system, unspecified

C48 Malignant neoplasm of retroperitoneum and peritoneum

C48.0 Malignant neoplasm of retroperitoneum

C48.1 Malignant neoplasm of specified parts of peritoneum

C48.2 Malignant neoplasm of peritoneum, unspecified

C48.8 Malignant neoplasm of overlapping sites of retroperitoneum and peritoneum

C49 Malignant neoplasm of other connective and soft tissue

C49.0 Malignant neoplasm of connective and soft tissue of head, face and neck

C49.1 Malignant neoplasm of connective and soft tissue of upper limb, including shoulder

C49.10 Malignant neoplasm of connective and soft tissue of unspecified upper limb, including shoulder

C49.11 Malignant neoplasm of connective and soft tissue of right upper limb, including shoulder

C49.12 Malignant neoplasm of connective and soft tissue of left upper limb, including shoulder

C49.2 Malignant neoplasm of connective and soft tissue of lower limb, including hip

Reimbursement claims with a date of service on or after October 1, 2015 require the use of ICD-10-CM codes.

2019 ICD-10-CM Diagnosis Code C48.0

Malignant neoplasm of retroperitoneum

Neoplasms

Malignant neoplasm of retroperitoneum and peritoneum

Malignant neoplasm of other connective and soft tissue