2020 ICD-10-CM Diagnosis Code D51.9

Vitamin B12 deficiency anemia, unspecified

    2016 2017 2018 2019 2020 Billable/Specific Code
  • D51.9 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 D51.9 became effective on October 1, 2019.
  • This is the American ICD-10-CM version of D51.9 - other international versions of ICD-10 D51.9 may differ.
The following code(s) above D51.9 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 D51.9:
  • D50-D89
    2020 ICD-10-CM Range D50-D89

    Diseases of the blood and blood-forming organs and certain disorders involving the immune mechanism

    Type 2 Excludes
    • autoimmune disease (systemic) NOS (M35.9)
    • certain conditions originating in the perinatal period (P00-P96)
    • complications of pregnancy, childbirth and the puerperium (O00-O9A)
    • congenital malformations, deformations and chromosomal abnormalities (Q00-Q99)
    • endocrine, nutritional and metabolic diseases (E00-E88)
    • human immunodeficiency virus [HIV] disease (B20)
    • injury, poisoning and certain other consequences of external causes (S00-T88)
    • neoplasms (C00-D49)
    • symptoms, signs and abnormal clinical and laboratory findings, not elsewhere classified (R00-R94)
    Diseases of the blood and blood-forming organs and certain disorders involving the immune mechanism
  • D51
    ICD-10-CM Diagnosis Code D51

    Vitamin B12 deficiency anemia

      2016 2017 2018 2019 2020 Non-Billable/Non-Specific Code
    Type 1 Excludes
    • vitamin B12 deficiency (E53.8)
    Vitamin B12 deficiency anemia
Approximate Synonyms
  • Anemia, vitamin b12 deficiency
  • Megaloblastic anemia due to vitamin b>12< deficiency
ICD-10-CM D51.9 is grouped within Diagnostic Related Group(s) (MS-DRG v37.0):
  • 811 Red blood cell disorders with mcc
  • 812 Red blood cell disorders without mcc

Convert D51.9 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
Code annotations containing back-references to D51.9:
  • Code First: G32.0
    ICD-10-CM Diagnosis Code G32.0

    Subacute combined degeneration of spinal cord in diseases classified elsewhere

      2016 2017 2018 2019 2020 Billable/Specific Code Manifestation Code
    Applicable To
    • Dana-Putnam syndrome
    • Sclerosis of spinal cord (combined) (dorsolateral) (posterolateral)
    Code First
    • underlying disease, such as:
    • anemia (D51.9)
    • dietary (D51.3)
    • pernicious (D51.0)
    • vitamin B12 deficiency (E53.8)
    Type 1 Excludes
    • syphilitic combined degeneration of spinal cord (A52.11)

Diagnosis Index entries containing back-references to D51.9:
  • Anemia (essential) (general) (hemoglobin deficiency) (infantile) (primary) (profound) D64.9
    ICD-10-CM Diagnosis Code D64.9

    Anemia, unspecified

      2016 2017 2018 2019 2020 Billable/Specific Code
    • deficiency D53.9
      ICD-10-CM Diagnosis Code D53.9

      Nutritional anemia, unspecified

        2016 2017 2018 2019 2020 Billable/Specific Code
      Applicable To
      • Simple chronic anemia
      Type 1 Excludes
  • Degeneration, degenerative
    • combined (spinal cord) (subacute) E53.8
      ICD-10-CM Diagnosis Code E53.8

      Deficiency of other specified B group vitamins

        2016 2017 2018 2019 2020 Billable/Specific Code
      Applicable To
      • Biotin deficiency
      • Cyanocobalamin deficiency
      • Folate deficiency
      • Folic acid deficiency
      • Pantothenic acid deficiency
      • Vitamin B12 deficiency
      Type 1 Excludes
      • folate deficiency anemia (D52.-)
      • vitamin B12 deficiency anemia (D51.-)
      • in (due to)
        • vitamin B12 deficiency E53.8
          ICD-10-CM Diagnosis Code E53.8

          Deficiency of other specified B group vitamins

            2016 2017 2018 2019 2020 Billable/Specific Code
          Applicable To
          • Biotin deficiency
          • Cyanocobalamin deficiency
          • Folate deficiency
          • Folic acid deficiency
          • Pantothenic acid deficiency
          • Vitamin B12 deficiency
          Type 1 Excludes
          • folate deficiency anemia (D52.-)
          • vitamin B12 deficiency anemia (D51.-)
          • anemia D51.9

ICD-10-CM Codes Adjacent To D51.9
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
D51.8 Other vitamin B12 deficiency anemias
D51.9 Vitamin B12 deficiency anemia, unspecified
D52 Folate deficiency anemia
D52.0 Dietary folate deficiency anemia
D52.1 Drug-induced folate deficiency anemia
D52.8 Other folate deficiency anemias
D52.9 Folate deficiency anemia, unspecified
D53 Other nutritional anemias
D53.0 Protein deficiency anemia
D53.1 Other megaloblastic anemias, not elsewhere classified
D53.2 Scorbutic anemia
D53.8 Other specified nutritional anemias

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