Skip to content
Multiple and bilateral

Modifier 22

Increased procedural services

Modifier 22 reports a procedure that required substantially greater work than typical. It is one of the few modifiers that requests additional payment rather than describing a circumstance, which means it requires supporting documentation and a written explanation.

Use it when

  • Work substantially exceeding what the procedure ordinarily requires
  • Documented additional time, technical difficulty or intensity
  • Where a written statement can quantify how much greater the effort was

Do not use it when

  • A procedure that was merely somewhat harder than average
  • Additional time with no documented reason for it
  • Routine complexity already contemplated by the code
  • As a general uplift on difficult cases without specific justification

A worked example

A procedure that ordinarily takes an hour requires three hours because of extensive adhesions from prior surgery, with significantly increased blood loss and technical difficulty throughout.

The claim carries modifier 22, and it is submitted with the operative note and a brief written statement quantifying the additional work — the extra time, the specific findings that caused it, and the additional risk involved.

Without that statement, most payers process the claim at the standard rate. The modifier alone requests nothing they can evaluate.

What decides it

Modifier 22 is nearly always adjudicated manually, which means the claim will be read by a person. That makes the quality of the written explanation the deciding factor rather than the modifier itself.

The threshold is substantially greater, not somewhat greater. Payers reject the great majority of modifier 22 claims, and a practice appending it routinely trains reviewers to dismiss its claims without reading them.

The strongest submissions compare the case to the typical: the usual time against the actual time, the usual findings against what was encountered. Quantification is what converts an assertion into an argument.

Denial codes this affects

CO-45Charge exceeds the fee schedule or contracted maximum allowableCO-151Payment adjusted because the payer deems the information submitted does not support this many servicesCO-16Claim or service lacks information needed for adjudication

Modifiers often confused with this one

Modifier 51Multiple proceduresModifier 78Unplanned return to the operating or procedure room by the same…Modifier 52Reduced services

Terms used here — Modifier · Appeal · Underpayment

How we handle it — Medical Coding · Denial Management · Practice Analytics

Every CPT and HCPCS modifier with a guide

Primary sources

What the payers and code-set maintainers actually publish about modifier 22.

Questions about modifier 22

When a procedure required substantially greater work than typical — not merely somewhat harder. The threshold is high, payers reject most claims carrying it, and routine use trains reviewers to dismiss a practice's claims without reading them.

The operative note plus a brief written statement quantifying the additional work: the usual time against the actual time, the specific findings that caused the difficulty, and the additional risk. Without it, most payers process at the standard rate.

No. It requests it. Claims carrying it are nearly always adjudicated manually, which makes the written explanation the deciding factor rather than the modifier.

They are opposites. Modifier 22 reports substantially more work than typical; modifier 52 reports a service that was reduced or partially performed. Both require documentation explaining the departure from the usual.

Find out what your denials are costing you

A free billing audit reviews your denial rate, AR aging and clean claim rate against industry benchmarks. Takes about two minutes to request. No sales pitch.

Get your free billing auditEstimate your revenue leak

No setup fees · You pay when we collect · Pricing from 3% of net collections