2020 ICD-10-CM Diagnosis Code D49.9

Neoplasm of unspecified behavior of unspecified site

    2016 2017 2018 2019 2020 Billable/Specific Code
  • D49.9 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 D49.9 became effective on October 1, 2019.
  • This is the American ICD-10-CM version of D49.9 - other international versions of ICD-10 D49.9 may differ.
The following code(s) above D49.9 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 D49.9:
  • 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
  • D49
    ICD-10-CM Diagnosis Code D49

    Neoplasms of unspecified behavior

      2016 2017 2018 2019 2020 Non-Billable/Non-Specific Code
    Includes
    • 'growth' NOS
    • neoplasm NOS
    • new growth NOS
    • tumor NOS
    Note
    • Category D49 classifies by site neoplasms of unspecified morphology and behavior. The term 'mass', unless otherwise stated, is not to be regarded as a neoplastic growth.
    Type 1 Excludes
    • neoplasms of uncertain behavior (D37-D44, D48)
    Neoplasms of unspecified behavior
Approximate Synonyms
  • Anemia in neoplastic disease
  • Anemia, neoplastic
  • Bilateral visual pathway disorder due to neoplasm
  • Dermatomyositis with malignant disease
  • Dermatomyositis with neoplastic disease
  • Disorder of optic chiasm due to neoplasm
  • Disorder of visual pathways associated with neoplasm
  • Germ cell tumor
  • Giant cell tumor
  • Hypercortisolism due to nonpituitary tumor
  • Myelopathy due to neoplastic disease
  • Myelopathy in neoplasm of unspecified nature
  • Neoplasm
  • Neoplasm, germ cell tumor
  • Neoplastic disease
  • Optic chiasm disorder assoc with neoplasm
  • Osteitis deformans in neoplastic disease
  • Osteitis deformans of multiple sites in neoplastic disease
  • Paraneoplastic polyneuropathy
  • Polyneuropathy (multiple nerve disorder)
  • Visual pathway disorder assoc with neoplasm
ICD-10-CM D49.9 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 D49.9 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

Diagnosis Index entries containing back-references to D49.9:
  • Arthropathy M12.9
    - see also Arthritis
    ICD-10-CM Diagnosis Code M12.9

    Arthropathy, unspecified

      2016 2017 2018 2019 2020 Billable/Specific Code
    • in (due to)
      • neoplastic disease NOS D49.9 (see also Neoplasm)
  • Ataxia, ataxy, ataxic R27.0
    ICD-10-CM Diagnosis Code R27.0

    Ataxia, unspecified

      2016 2017 2018 2019 2020 Billable/Specific Code
    Type 1 Excludes
    • ataxia following cerebrovascular disease (I69. with final characters -93)
    • cerebellar (hereditary) G11.9
      ICD-10-CM Diagnosis Code G11.9

      Hereditary ataxia, unspecified

        2016 2017 2018 2019 2020 Billable/Specific Code
      Applicable To
      • Hereditary cerebellar ataxia NOS
      • Hereditary cerebellar degeneration
      • Hereditary cerebellar disease
      • Hereditary cerebellar syndrome
  • Atrophy, atrophic (of)
  • Compression
    • nerve G58.9
      - see also Disorder, nerve
      ICD-10-CM Diagnosis Code G58.9

      Mononeuropathy, unspecified

        2016 2017 2018 2019 2020 Billable/Specific Code
      • root or plexus NOS (in) G54.9
        ICD-10-CM Diagnosis Code G54.9

        Nerve root and plexus disorder, unspecified

          2016 2017 2018 2019 2020 Billable/Specific Code
        • neoplastic disease D49.9 - see also Neoplasm
  • Dermatomyositis (acute) (chronic) - see also Dermatopolymyositis
  • Dermatopolymyositis M33.90
    ICD-10-CM Diagnosis Code M33.90

    Dermatopolymyositis, unspecified, organ involvement unspecified

      2016 2017 2018 2019 2020 Billable/Specific Code
    • in neoplastic disease D49.9 - see also Neoplasm
  • Encephalopathy (acute) G93.40
    ICD-10-CM Diagnosis Code G93.40

    Encephalopathy, unspecified

      2016 2017 2018 2019 2020 Billable/Specific Code
    • in (due to) (with)
      • neoplastic disease D49.9 (see also Neoplasm)
  • Myasthenia G70.9
    ICD-10-CM Diagnosis Code G70.9

    Myoneural disorder, unspecified

      2016 2017 2018 2019 2020 Billable/Specific Code
  • Myelopathy (spinal cord) G95.9
    ICD-10-CM Diagnosis Code G95.9

    Disease of spinal cord, unspecified

      2016 2017 2018 2019 2020 Billable/Specific Code
    Applicable To
    • Myelopathy NOS
    • in (due to)
      • neoplastic disease D49.9 - see also Neoplasm
  • Neuromyopathy G70.9
    ICD-10-CM Diagnosis Code G70.9

    Myoneural disorder, unspecified

      2016 2017 2018 2019 2020 Billable/Specific Code
    • paraneoplastic D49.9
  • Neuropathy, neuropathic G62.9
    ICD-10-CM Diagnosis Code G62.9

    Polyneuropathy, unspecified

      2016 2017 2018 2019 2020 Billable/Specific Code
    Applicable To
    • Neuropathy NOS
    • paraneoplastic D49.9 (sensorial) (Denny Brown)
  • Osteitis - see also Osteomyelitis
    • deformans M88.9
      ICD-10-CM Diagnosis Code M88.9

      Osteitis deformans of unspecified bone

        2016 2017 2018 2019 2020 Billable/Specific Code
      • in (due to)
        • neoplastic disease D49.9 - see also Neoplasm
          • carpus D49.9
          • clavicle D49.9
          • femur D49.9
          • fibula D49.9
          • finger D49.9
          • humerus D49.9
          • ilium D49.9
          • ischium D49.9
          • metacarpus D49.9
          • metatarsus D49.9
          • multiple sites D49.9
          • neck D49.9
          • radius D49.9
          • rib D49.9
          • scapula D49.9
          • skull D49.9
          • tarsus D49.9
          • tibia D49.9
          • toe D49.9
          • ulna D49.9
          • vertebra D49.9
  • Palsy G83.9
    - see also Paralysis
    ICD-10-CM Diagnosis Code G83.9

    Paralytic syndrome, unspecified

      2016 2017 2018 2019 2020 Billable/Specific Code
  • Polyneuropathy (peripheral) G62.9
    ICD-10-CM Diagnosis Code G62.9

    Polyneuropathy, unspecified

      2016 2017 2018 2019 2020 Billable/Specific Code
    Applicable To
    • Neuropathy NOS
    • in (due to)
      • neoplastic disease D49.9 - see also Neoplasm
  • Syndrome - see also Disease
    • myasthenic G70.9
      ICD-10-CM Diagnosis Code G70.9

      Myoneural disorder, unspecified

        2016 2017 2018 2019 2020 Billable/Specific Code

ICD-10-CM Codes Adjacent To D49.9
D49.51 Neoplasm of unspecified behavior of kidney
D49.511 Neoplasm of unspecified behavior of right kidney
D49.512 Neoplasm of unspecified behavior of left kidney
D49.519 Neoplasm of unspecified behavior of unspecified kidney
D49.59 Neoplasm of unspecified behavior of other genitourinary organ
D49.6 Neoplasm of unspecified behavior of brain
D49.7 Neoplasm of unspecified behavior of endocrine glands and other parts of nervous system
D49.8 Neoplasm of unspecified behavior of other specified sites
D49.81 Neoplasm of unspecified behavior of retina and choroid
D49.89 Neoplasm of unspecified behavior of other specified sites
D49.9 Neoplasm of unspecified behavior of unspecified site
D50 Iron deficiency anemia
D50.0 Iron deficiency anemia secondary to blood loss (chronic)
D50.1 Sideropenic dysphagia
D50.8 Other iron deficiency anemias
D50.9 Iron deficiency anemia, unspecified
D51 Vitamin B12 deficiency anemia
D51.0 Vitamin B12 deficiency anemia due to intrinsic factor deficiency
D51.1 Vitamin B12 deficiency anemia due to selective vitamin B12 malabsorption with proteinuria
D51.2 Transcobalamin II deficiency
D51.3 Other dietary vitamin B12 deficiency anemia

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