2017/18 ICD-10-CM Diagnosis Code C57.21

Malignant neoplasm of right round ligament

ICD-10-CM Coding Rules
The following code(s) above C57.21 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 C57.21:
  • C00-D49
    2018 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
  • C51-C58
    2018 ICD-10-CM Range C51-C58

    Malignant neoplasms of female genital organs

    Includes
    • malignant neoplasm of skin of female genital organs
    Malignant neoplasms of female genital organs
Approximate Synonyms ICD-10-CM C57.21 is grouped within Diagnostic Related Group(s) (MS-DRG v35.0):

Convert C57.21 to ICD-9-CM

Code History
ICD-10-CM Codes Adjacent To C57.21
C57.0 Malignant neoplasm of fallopian tube
C57.00 Malignant neoplasm of unspecified fallopian tube
C57.01 Malignant neoplasm of right fallopian tube
C57.02 Malignant neoplasm of left fallopian tube
C57.1 Malignant neoplasm of broad ligament
C57.10 Malignant neoplasm of unspecified broad ligament
C57.11 Malignant neoplasm of right broad ligament
C57.12 Malignant neoplasm of left broad ligament
C57.2 Malignant neoplasm of round ligament
C57.20 Malignant neoplasm of unspecified round ligament
C57.21 Malignant neoplasm of right round ligament
C57.22 Malignant neoplasm of left round ligament
C57.3 Malignant neoplasm of parametrium
C57.4 Malignant neoplasm of uterine adnexa, unspecified
C57.7 Malignant neoplasm of other specified female genital organs
C57.8 Malignant neoplasm of overlapping sites of female genital organs
C57.9 Malignant neoplasm of female genital organ, unspecified
C58 Malignant neoplasm of placenta
C60 Malignant neoplasm of penis
C60.0 Malignant neoplasm of prepuce
C60.1 Malignant neoplasm of glans penis

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