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FEV1 and Lung Function
The Read codes associated with FEV1 entries and Lung Function include:
FEV1
339O Forced expired volume in 1 second (Read code default)
3397 Forced expiratory volume - FEV
339P Expected FEV1
339S Percent predicted FEV1
FEV1 / FVC
339M FEV1/FVC ratio (Read code default)
3398 FEV1/FVC ratio normal
3399 FEV1/FVC ratio abnormal
339N Expected FEV1/FVC ratio
339R FEV1/FVC percent
339T FEV1/FVC > 70% of predicted
339U FEV1/FVC < 70% of predicted
FVC
3396 Forced vital capacity - FVC (Read code default)
339Q Expected FVC
339i FVC/Expected FVC percent
Lung Func after bronchodilation
339B Peak flow rate after bronchodilation (Read code default)
339b FEV1 after bronchodilation
339h FVC after bronchodilation
339m FEV1/FVC ratio after bronchilator
Lung Func before bronchodilation
339A Peak flow rate before bronchodilation (Read code default)
339a FEV1 before bronchodilation
3391 Resp. flow rate measured
Lung Function Post Steroids
339d Peak expiratory flow rage post steroids (Read code default)
339f FEV1 post steroids
339k FEV1/FVC ratio post steroids
Lung Function Pre Steroids
339c Peak expiratory flow rate pre steroids (Read code default)
339e FEV1 pre steroids
339j FEV1/FVC ratio pre steroids
Peak Flow Best Ever
339D Best ever peak flow rate (Read code default)
339X Percentage of best ever peak expiratory flow rate
Peak Flow Current
3395 Peak exp.flow rate:PEFR/PFR (Read code default)
339E More than 80% of predicted peak flow rate
339F 60-80% of predicted peak flow rate
339G Less than 60% of predicted peak flow rate
339W Worst peak flow rate
339g Serial peak expiratory flow rate
339n Serial peak expiratory flow rate abnormal
339o Peak expiratory flow rate measured using EN 13826 device
339p Predict PEFR using EN13826 std
NB 339A Peak flow rate before bronchodilation, and 339B Peak flow rate after bronchodilation, have been removed from picklist.
Peak Flow Predicted
339C Expected peak flow rate (Read code default)
339H Predicted peak flow
339I Expected peak flow rate x 50%
339J Optimal peak flow rate
339K Expected peak flow rate x 30%
339L Expected peak flow rate x 80%
339V Recorded/predicted peak expiratory flow rate ratio (new code in range)
339Y Percentage of peak expiratory flow rate variability (new code in range)
