2023

  1. ICD-10-CM Codes
    2. ›
  2. C00-D49
    3. ›
  3. D37-D48
    4. ›
  4. D43-
    5. ›
  5. 2023 ICD-10-CM Diagnosis Code D43

2023 ICD-10-CM Diagnosis Code D43

Neoplasm of uncertain behavior of brain and central nervous system

    2016 2017 2018 2019 2020 2021 2022 2023 Non-Billable/Non-Specific Code
  • D43 should not be used for reimbursement purposes as there are multiple codes below it that contain a greater level of detail.
  • Short description: Neoplasm of uncertain behavior of brain and cnsl
  • The 2023 edition of ICD-10-CM D43 became effective on October 1, 2022.
  • This is the American ICD-10-CM version of D43 - other international versions of ICD-10 D43 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 D43. 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.
  • neoplasm of uncertain behavior of peripheral nerves and autonomic nervous system (
    ICD-10-CM Diagnosis Code D48.2

    Neoplasm of uncertain behavior of peripheral nerves and autonomic nervous system

      2016 2017 2018 2019 2020 2021 2022 2023 Billable/Specific Code
    Type 1 Excludes
    • neoplasm of uncertain behavior of peripheral nerves of orbit (D48.7)
    D48.2
    )
The following code(s) above D43 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 D43:
  • C00-D49
    2023 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
  • D37-D48
    2023 ICD-10-CM Range D37-D48

    Neoplasms of uncertain behavior, polycythemia vera and myelodysplastic syndromes

    Note
    • Categories D37-D44, and D48 classify by site neoplasms of uncertain behavior, i.e., histologic confirmation whether the neoplasm is malignant or benign cannot be made.
    Type 1 Excludes
    • neoplasms of unspecified behavior (D49.-)
    Neoplasms of uncertain behavior, polycythemia vera and myelodysplastic syndromes
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
  • 2021 (effective 10/1/2020): No change
  • 2022 (effective 10/1/2021): No change
  • 2023 (effective 10/1/2022): No change
ICD-10-CM Codes Adjacent To D43
D41.21 Neoplasm of uncertain behavior of right ureter
D41.22 Neoplasm of uncertain behavior of left ureter
D41.3 Neoplasm of uncertain behavior of urethra
D41.4 Neoplasm of uncertain behavior of bladder
D41.8 Neoplasm of uncertain behavior of other specified urinary organs
D41.9 Neoplasm of uncertain behavior of unspecified urinary organ
D42 Neoplasm of uncertain behavior of meninges
D42.0 Neoplasm of uncertain behavior of cerebral meninges
D42.1 Neoplasm of uncertain behavior of spinal meninges
D42.9 Neoplasm of uncertain behavior of meninges, unspecified
D43 Neoplasm of uncertain behavior of brain and central nervous system
D43.0 Neoplasm of uncertain behavior of brain, supratentorial
D43.1 Neoplasm of uncertain behavior of brain, infratentorial
D43.2 Neoplasm of uncertain behavior of brain, unspecified
D43.3 Neoplasm of uncertain behavior of cranial nerves
D43.4 Neoplasm of uncertain behavior of spinal cord
D43.8 Neoplasm of uncertain behavior of other specified parts of central nervous system
D43.9 Neoplasm of uncertain behavior of central nervous system, unspecified
D44 Neoplasm of uncertain behavior of endocrine glands
D44.0 Neoplasm of uncertain behavior of thyroid gland
D44.1 Neoplasm of uncertain behavior of adrenal gland

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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