1. ICD-10-CM Codes
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2. C00-D49 Neoplasms
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3. D49-D49 Neoplasms of unspecified behavior
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4. D49- Neoplasms of unspecified behavior
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5. 2021 ICD-10-CM Diagnosis Code D49.9

2021 ICD-10-CM Diagnosis Code D49.9

Neoplasm of unspecified behavior of unspecified site

2016 2017 2018 2019 2020 2021 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 2021 edition of ICD-10-CM D49.9 became effective on October 1, 2020.
• This is the American ICD-10-CM version of D49.9 - other international versions of ICD-10 D49.9 may differ.

• 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

• 826 Myeloproliferative disorders or poorly differentiated neoplasms with major o.r. Procedures with mcc
• 827 Myeloproliferative disorders or poorly differentiated neoplasms with major o.r. Procedures with cc
• 828 Myeloproliferative disorders or poorly differentiated neoplasms with major o.r. Procedures without cc/mcc
• 829 Myeloproliferative disorders or poorly differentiated neoplasms with other procedures with cc/mcc
• 830 Myeloproliferative disorders or poorly differentiated neoplasms with other procedures 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

• 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

• Arthropathy M12.9
  - see also Arthritis
  ICD-10-CM Diagnosis Code M12.9

  Arthropathy, unspecified

  2016 2017 2018 2019 2020 2021 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 2021 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 2021 Billable/Specific Code

    Applicable To

    • Hereditary cerebellar ataxia NOS
    • Hereditary cerebellar degeneration
    • Hereditary cerebellar disease
    • Hereditary cerebellar syndrome
    • in
      • neoplastic disease D49.9 - see also Neoplasm
• Atrophy, atrophic (of)
  • systemic affecting central nervous system
    • in
      • neoplastic disease D49.9 - see also Neoplasm
• Compression
  • nerve G58.9
    - see also Disorder, nerve
    ICD-10-CM Diagnosis Code G58.9

    Mononeuropathy, unspecified

    2016 2017 2018 2019 2020 2021 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 2021 Billable/Specific Code
      • neoplastic disease D49.9 - see also Neoplasm
• Dermatomyositis (acute) (chronic) - see also Dermatopolymyositis
  • in D49.9 (due to) - see also Neoplasm
• Dermatopolymyositis M33.90
  ICD-10-CM Diagnosis Code M33.90

  Dermatopolymyositis, unspecified, organ involvement unspecified

  2016 2017 2018 2019 2020 2021 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 2021 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 2021 Billable/Specific Code
  • syndrome
    • in
      • neoplastic disease D49.9 - see also Neoplasm
• Myelopathy (spinal cord) G95.9
  ICD-10-CM Diagnosis Code G95.9

  Disease of spinal cord, unspecified

  2016 2017 2018 2019 2020 2021 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 2021 Billable/Specific Code
  • paraneoplastic D49.9
• Neuropathy, neuropathic G62.9
  ICD-10-CM Diagnosis Code G62.9

  Polyneuropathy, unspecified

  2016 2017 2018 2019 2020 2021 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 2021 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 2021 Billable/Specific Code
  • cranial nerve - see also Disorder, nerve, cranial
    • multiple G52.7
      ICD-10-CM Diagnosis Code G52.7

      Disorders of multiple cranial nerves

      2016 2017 2018 2019 2020 2021 Billable/Specific Code

      Applicable To

      • Polyneuritis cranialis
      • in
        • neoplastic disease D49.9 - see also Neoplasm
• Polyneuropathy (peripheral) G62.9
  ICD-10-CM Diagnosis Code G62.9

  Polyneuropathy, unspecified

  2016 2017 2018 2019 2020 2021 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 2021 Billable/Specific Code
    • in
      • neoplastic disease D49.9 - see also Neoplasm

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