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

2020 ICD-10-CM Diagnosis Code C48

Malignant neoplasm of retroperitoneum and peritoneum

2016

2017

2018

2019

2020

Non-Billable/Non-Specific Code

C48 should not be used for reimbursement purposes as there are multiple codes below it that contain a greater level of detail.
The 2020 edition of ICD-10-CM C48 became effective on October 1, 2019.
This is the American ICD-10-CM version of C48 - other international versions of ICD-10 C48 may differ.

Type 1 Excludes

Type 1 Excludes Help

A type 1 excludes note is a pure excludes. It means "not coded here". A type 1 excludes note indicates that the code excluded should never be used at the same time as C48. A type 1 excludes note is for used for when two conditions cannot occur together, such as a congenital form versus an acquired form of the same condition.

Kaposi's sarcoma of connective tissue (
ICD-10-CM Diagnosis Code C46.1
Kaposi's sarcoma of soft tissue
Applicable To
- Kaposi's sarcoma of blood vessel
- Kaposi's sarcoma of connective tissue
- Kaposi's sarcoma of fascia
- Kaposi's sarcoma of ligament
- Kaposi's sarcoma of lymphatic(s) NEC
- Kaposi's sarcoma of muscle
Type 2 Excludes
- Kaposi's sarcoma of lymph glands and nodes (C46.3)
C46.1
)
mesothelioma (
ICD-10-CM Diagnosis Code C45
- C45 Mesothelioma
  - C45.0 Mesothelioma of pleura
  - C45.1 Mesothelioma of peritoneum
  - C45.2 Mesothelioma of pericardium
  - C45.7 Mesothelioma of other sites
  - C45.9 Mesothelioma, unspecified
C45.-
)

The following code(s) above C48 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:

C00-D49
2020 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

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
2020 (effective 10/1/2019): No change

Code annotations containing back-references to C48:

Type 1 Excludes: C26
, C45.1

ICD-10-CM Diagnosis Code C26
Malignant neoplasm of other and ill-defined digestive organs
Type 1 Excludes
- malignant neoplasm of peritoneum and retroperitoneum (C48.-)
ICD-10-CM Diagnosis Code C45.1
Mesothelioma of peritoneum
Applicable To
- Mesothelioma of cul-de-sac
- Mesothelioma of mesentery
- Mesothelioma of mesocolon
- Mesothelioma of omentum
- Mesothelioma of peritoneum (parietal) (pelvic)
Type 1 Excludes
- other malignant neoplasm of soft tissue of peritoneum (C48.-)

ICD-10-CM Codes Adjacent To C48

C47.2 Malignant neoplasm of peripheral nerves of lower limb, including hip

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

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

2020 ICD-10-CM Diagnosis Code C48

Malignant neoplasm of retroperitoneum and peritoneum

Kaposi's sarcoma of soft tissue

Neoplasms

Malignant neoplasm of other and ill-defined digestive organs

Mesothelioma of peritoneum