Y44.9Other and unspecified agents affecting blood constituents
Code usage status
Primary diagnosis
Must not be used as the primary diagnosis
Apply only when it matches the confirmed diagnosis and the documented clinical record.
Specificity
Complete code in the classification
Use when the diagnosis matches and no exclusion applies.
- Group Y40-Y84
- Complications of medical and surgical care
- Official Vietnamese name
- Tác động bất lợi của chất khác và/hoặc không xác định ảnh hưởng đến các thành phần của máu
Related Y44 codes
Y44
Agents primarily affecting blood constituents
Y44.0
Iron preparations and other anti- hypochromic- anaemia preparations
Y44.1
Vitamin B12, folic acid and other anti- megaloblastic- anaemia preparations
Y44.2
Anticoagulants
Y44.3
Anticoagulant antagonists, vitamin K and other coagulants
Y44.4
Antithrombotic drugs [platelet- aggregation inhibitors]
Y44.5
Thrombolytic drugs
Y44.6
Natural blood and blood products
Y44.7
Plasma substitutes
Clinical record checklist
View coding guide →- Confirm that the code matches the final documented diagnosis.
- Use one primary-diagnosis code and record only relevant additional conditions.
- Review Ministry indicators, inclusions, exclusions and notes.
- Do not infer a diagnosis beyond the clinical record.
2026 regulatory basis
Indicators are taken from columns 24–29 of the classification accompanying Circular 06/2026/TT-BYT, cross-referenced with Decision 1849/QĐ-BYT and Official Dispatch 4059/BYT-BH.
