VITiếng Việt
ICD-10 Vietnam

E66.2Extreme obesity with alveolar hypoventilation

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 IV
Endocrine, nutritional and metabolic diseases
Group E65-E68
Obesity and other hyperalimentation
Official Vietnamese name
Bệnh béo phì quá mức với giảm thông khí phế nang
Additional WHO coding guidance
Obesity hypoventilation syndrome (OHS) Pickwickian syndrome

Related E66 codes

E66 Obesity E66.0 Primary diagnosis candidate Obesity due to excess calories E66.1 Primary diagnosis candidate Drug-induced obesity E66.8 Primary diagnosis candidate Other obesity E66.9 Primary diagnosis candidate Obesity, unspecified Simple obesity NOS

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.