Your question is unclear and we would need more information about your claim/lawsuit to offer any coherent answer. Typically any liens or litigation costs may be deducted from a settlement prior to disbursement.
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Case expenses such as court costs, expert fees, reporters fees must be paid in full. Some liens can be negotiated down, others can't. It depends on the nature of the lien, to whom the money is owed, and how much was recovered . To suggest that the client should not sign a release until the attorney has negotiated all the liens down 90% or more is not good advice. Medicare, for example, may not even tell the lawyer what the lien is until the settlement amount is finalized.
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Based on the info provided, I would presume normal "expenses" are Court filing fees, extensive photo copy jobs, courier service, parking and tolls to go to Court, medical record copying fees, etc.
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