2019/2020

  1. ICD-10-CM Codes
    2. ›
  2. C00-D49 Neoplasms
    3. ›
  3. C7B-C7B Secondary neuroendocrine tumors
    4. ›
  4. C7B- Secondary neuroendocrine tumors
    5. ›

2020 ICD-10-CM Diagnosis Code C7B.1

Secondary Merkel cell carcinoma

    2016 2017 2018 2019 2020 Billable/Specific Code
  • C7B.1 is a billable/specific ICD-10-CM code that can be used to indicate a diagnosis for reimbursement purposes.
  • The 2020 edition of ICD-10-CM C7B.1 became effective on October 1, 2019.
  • This is the American ICD-10-CM version of C7B.1 - other international versions of ICD-10 C7B.1 may differ.
Applicable To
  • Merkel cell carcinoma nodal presentation
  • Merkel cell carcinoma visceral metastatic presentation
The following code(s) above C7B.1 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 C7B.1:
  • 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
  • C7B
    ICD-10-CM Diagnosis Code C7B

    Secondary neuroendocrine tumors

      2016 2017 2018 2019 2020 Non-Billable/Non-Specific Code
    Use Additional
    • code to identify any functional activity
    Secondary neuroendocrine tumors
Approximate Synonyms
  • Merkel cell carcinoma metastatic to liver
  • Merkel cell carcinoma metastatic to lymph node
  • Merkel cell carcinoma metastatic to skin
  • Merkel cell carcinoma metastatic to unspecified site
  • Merkel cell carcinoma, metastatic
ICD-10-CM C7B.1 is grouped within Diagnostic Related Group(s) (MS-DRG v37.0):
  • 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 C7B.1 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
  • 2020 (effective 10/1/2019): No change
Code annotations containing back-references to C7B.1:
  • Type 1 Excludes: C79.2
    ICD-10-CM Diagnosis Code C79.2

    Secondary malignant neoplasm of skin

      2016 2017 2018 2019 2020 Billable/Specific Code
    Type 1 Excludes
    • secondary Merkel cell carcinoma (C7B.1)

Diagnosis Index entries containing back-references to C7B.1:

ICD-10-CM Codes Adjacent To C7B.1
C7A.1 Malignant poorly differentiated neuroendocrine tumors
C7A.8 Other malignant neuroendocrine tumors
C7B Secondary neuroendocrine tumors
C7B.0 Secondary carcinoid tumors
C7B.00 …… unspecified site
C7B.01 …… of distant lymph nodes
C7B.02 …… of liver
C7B.03 …… of bone
C7B.04 …… of peritoneum
C7B.09 …… of other sites
C7B.1 Secondary Merkel cell carcinoma
C7B.8 Other secondary neuroendocrine tumors
C76 Malignant neoplasm of other and ill-defined sites
C76.0 Malignant neoplasm of head, face and neck
C76.1 Malignant neoplasm of thorax
C76.2 Malignant neoplasm of abdomen
C76.3 Malignant neoplasm of pelvis
C76.4 Malignant neoplasm of upper limb
C76.40 Malignant neoplasm of unspecified upper limb
C76.41 Malignant neoplasm of right upper limb
C76.42 Malignant neoplasm of left upper limb

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

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