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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)