In 2007 nearly 6000 claims were lodged. Some 3991 were accepted and 1928 were declined. By 2012 only 49 claims were accepted.
Ten per cent of claims were accepted in 2010; 4 per cent in 2011; and 4 per cent in 2012.
In the first six months of this year, 1026 claims - 80 per cent of those lodged - were put on hold.
ACC Minister Judith Collins said today the corporation was making good progress on the 14 recommendations but would not comment on the number of claims on hold or the decline in approved claims.
Since the review, all people who make a claim to the sensitive claims unit, regardless of whether their claim is approved, are entitled to 16 support session with an ACC-approved professional.
ACC general manager, claims management, Denise Cosgrove said the number of claims approved had dropped because many claimants found the 16 sessions were enough and their claim did not proceed to an assessment for compensation.
Labour Party ACC spokesman Andrew Little said a dramatic drop in the number of accepted claims suggested there was something wrong with assessment procedures.
Green party spokesman Kevin Hague said it was unreasonable for so many claims to be put on hold.
"Leaving 80 per cent of claims in limbo is completely unacceptable. The Government and ACC have created a culture of severe disentitlement when it comes to sensitive claims.''
Kyle MacDonald, NZ Association of Psychotherapists spokesman and a member of the sensitive claim advisory group, gave ACC a "fail mark'' for its progress on the recommendations and called the decline in accepted claims from 40 per cent to 4 per cent a "horrifying number''.
A woman who has made a sensitive claim, who did not want to be named, said she was outraged by the decrease in the number of claims accepted.
"Things have not improved.''
She said sensitive claimants were poorly served and misunderstood.
Year - claim - status:
2007 - Held: 0, Declined: 1928, Accepted: 3991 - Total claims lodged: 5919
2008 - Held: 0, Declined: 2313, Accepted: 3540 - Total claims lodged: 5853
2009 - Held: 0, Declined: 2995, Accepted: 2-62 - Total claims lodged: 5057
2010 - Held: 0 Declined: 191. Accepted: 403 - Total claims lodged: 3112
2011 - Held: 115 Declined:100, Accepted: 135 - Total claims lodged: 3782
2012 - Held:1026, Declined: 250, Accepted: 49 - Total claims lodged:1325