R83.4Abnormal findings in cerebrospinal fluid, abnormal immunological findings
Code usage status
Primary diagnosis
May 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.
- Chapter XVIII
- Symptoms, signs and abnormal clinical and laboratory findings, not elsewhere classified
- Group R83-R89
- Abnormal findings on examination of other body fluids, substances and tissues, without diagnosis
- Official Vietnamese name
- Phát hiện bất thường trong dịch não tủy, phát hiện miễn dịch bất thường
Related R83 codes
R83
Abnormal findings in cerebrospinal fluid
R83.0
Primary diagnosis candidate
Abnormal findings in cerebrospinal fluid, abnormal level of enzymes
R83.1
Primary diagnosis candidate
Abnormal findings in cerebrospinal fluid, abnormal level of hormones
R83.2
Primary diagnosis candidate
Abnormal findings in cerebrospinal fluid, abnormal level of other drugs, medicaments and biological substances
R83.3
Primary diagnosis candidate
Abnormal findings in cerebrospinal fluid, abnormal level of substances chiefly nonmedicinal as to source
R83.5
Primary diagnosis candidate
Abnormal findings in cerebrospinal fluid, abnormal microbiological findings
R83.6
Primary diagnosis candidate
Abnormal findings in cerebrospinal fluid, abnormal cytological findings
R83.7
Primary diagnosis candidate
Abnormal findings in cerebrospinal fluid, abnormal histological findings
R83.8
Primary diagnosis candidate
Abnormal findings in cerebrospinal fluid, other abnormal findings
R83.9
Primary diagnosis candidate
Abnormal findings in cerebrospinal fluid, unspecified abnormal finding
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.
