D51.2
BillableTranscobalamin II deficiency
Transcobalamin II deficiency
Coding Notes
Excludes 1
Codes that cannot be used together with this code (mutual exclusion)
Excludes 2
Conditions not included here, but the patient may have both
- •autoimmune disease (systemic) NOSM35.9
- •certain conditions originating in the perinatal periodP00-P96
- •complications of pregnancy, childbirth and the puerperiumO9A)O00
- •congenital malformations, deformations and chromosomal abnormalitiesQ00-Q99
- •endocrine, nutritional and metabolic diseasesE00-E88
- •human immunodeficiency virus [HIV] diseaseB20
- •injury, poisoning and certain other consequences of external causesS00-T88
- •neoplasmsC00-D49
- •symptoms, signs and abnormal clinical and laboratory findings, not elsewhere classifiedR00-R94
Related Codes(5)
D51.0Vitamin B12 defic anemia due to intrinsic factor deficiency
D51.1Vit B12 defic anemia d/t slctv vit B12 malabsorp w protein
D51.3Other dietary vitamin B12 deficiency anemia
D51.8Other vitamin B12 deficiency anemias
D51.9Vitamin B12 deficiency anemia, unspecified
ICD-11 Equivalents(1)
ICD-11 Equivalents
View full mappingCorresponding ICD-11 codes from the WHO crosswalk mapping
Also Known As / Clinical Terms(31)
SNOMED CT
- Congenital pernicious anaemia34925000
- Congenital pernicious anemia34925000
- Megaloblastic anaemia due to inborn errors of metabolism34925000
- Megaloblastic anemia due to inborn errors of metabolism34925000
- TCN2 - Transcobalamin II deficiency237934001
- Transcobalamin II deficiency237934001
- Congenital megaloblastic anaemia due to transcobalamin II deficiency1142087002
- Congenital megaloblastic anemia due to transcobalamin II deficiency1142087002
UMLS
- TC II DEFICIENCYC0342701
- TC II deficiencyC0342701
- TCN2 - Transcobalamin II deficiencyC0342701
- TCN2 DEFICIENCYC0342701
- TCN2 deficiencyC0342701
- TCN2DC0342701
- TRANSCOBALAMIN II DEFICIENCYC0342701
- Transcobalamin II DeficiencyC0342701
- Transcobalamin II deficiencyC0342701
- Transcobalamin II deficiency (disorder)C0342701
- transcobalamin II deficiencyC0342701
- transcobalamin ii deficiencyC0342701
Clinical Terms
- Congenital megaloblastic anemia due to transcobalamin II deficiency
- TC II deficiency
- TCN2 deficiency
- Congenital pernicious anemia
- Megaloblastic anemia due to inborn errors of metabolism
- Megaloblastic anaemia due to inborn errors of metabolism
- TCN2D
- Congenital megaloblastic anaemia due to transcobalamin II deficiency
- TCN2 - Transcobalamin II deficiency
- Congenital pernicious anaemia
- Transcobalamin II deficiency (disorder)
Frequently Asked Questions
What is the ICD-10 code for transcobalamin ii deficiency?
The ICD-10-CM code for transcobalamin ii deficiency is D51.2. The full clinical description is "Transcobalamin II deficiency". D51.2 is a billable/specific code that can be used on insurance claims and medical billing.
What does ICD-10 code D51.2 mean?
ICD-10-CM code D51.2 represents “Transcobalamin II deficiency”. It is classified under Chapter 3: Diseases of the Blood and Blood-Forming Organs and is a billable/specific code that can be used on a claim.
Is D51.2 a billable code?
Yes, D51.2 is a billable/specific ICD-10-CM code and can be used to indicate a diagnosis on a medical claim.
What chapter is D51.2 in?
D51.2 is in Chapter 3: Diseases of the Blood and Blood-Forming Organs (codes D50-D89).
What codes cannot be used with D51.2?
D51.2 has Excludes1 notes indicating codes that cannot be used together with it, including: vitamin B12 deficiency (E53.8).
What SNOMED CT codes does D51.2 map to?
D51.2 maps to 3 SNOMED CT concepts: 1142087002, 34925000, 237934001. SNOMED CT is a clinical terminology used in electronic health records.
What are the UMLS CUIs for D51.2?
D51.2 is linked to 1 UMLS Concept Unique Identifier: C0342701. The UMLS (Unified Medical Language System) integrates multiple biomedical vocabularies maintained by the U.S. National Library of Medicine.
How does D51.2 relate to ICF functioning codes?
ICF (International Classification of Functioning, Disability and Health) codes describe how conditions like transcobalamin ii deficiency affect a person's functioning — body functions, activities, participation, and environmental factors. AutoICD provides ICF Core Sets for 12+ conditions and can map clinical text to ICF categories automatically. Browse the ICF directory to explore functioning codes.
What is the ICD-11 equivalent of D51.2?
D51.2 maps to the ICD-11 code: 3A01.0 (Hereditary vitamin B12 deficiency anaemia).
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Includes SNOMED Clinical Terms® (SNOMED CT®) used by permission of SNOMED International. Includes content from the UMLS Metathesaurus, courtesy of the U.S. National Library of Medicine.