Start and stop times: the two numbers that defend every time-based code

Do you need exact start and stop times? Yes — here's why

Yes: every time-based psychotherapy code depends on the actual number of minutes you spent in the service, and the clearest way to support that number is recording the clock start and stop time for the session, not just a duration you estimate afterward. The CPT codes for individual psychotherapy — 90832, 90834, 90837 — are each defined by minimum-time thresholds within a specific range, and the time you build into your note is what a reviewer checks the billed code against 1Ref 1APA Services, Inc. (2025).Psychotherapy Codes for Psychologists.The time-band definitions for 90832/90834/90837 that a session's actual duration is checked against..

A note that states only "45-minute session" without the times that produced that number is common, and often accepted, but it is weaker support than an actual start and stop time if a payer or auditor ever asks you to substantiate the code. The two clock times let anyone reconstruct the duration; a stated duration alone asks the reader to trust your arithmetic and your memory.

Build the habit of recording both times at the moment you start and the moment you end the session, rather than reconstructing them from memory when you write the note later — the golden thread from start time to stop time to billed code is the shortest one you will ever have to defend.

What "exact" means in practice: clock times, not just a duration

"Exact" does not mean down-to-the-second precision; it means the actual clock time you began and ended the clinical service, recorded at the time it happened rather than rounded to whatever number matches the code you intend to bill. A session that ran 9:03 to 9:49 supports 46 minutes — squarely in the 90834 range — more convincingly than a note that simply states a duration with no times behind it.

Record the times the way you would record any other objective clinical fact: plainly, in the note, at the point in your workflow where you would otherwise just remember to jot down the duration. If your EHR's timer or scheduling system captures this automatically, use it, but verify occasionally that the automatic capture reflects when the clinical service actually started, not when the appointment was scheduled to start.

Rounding your times to always land at a round number — every session magically running the same duration — is a pattern payers' analytics are built to catch. Real sessions vary; your documented times should too.

How the times map to the CPT time band you bill

Each individual psychotherapy code corresponds to a specific duration range — 90832, 90834, 90837 — with the code selected by where your actual session time falls, not by which code pays better 1Ref 1APA Services, Inc. (2025).Psychotherapy Codes for Psychologists.The time-band definitions for 90832/90834/90837 that a session's actual duration is checked against.. Your start and stop times are what place the session inside one of those bands, and the note should make that placement obvious rather than requiring the reader to do the subtraction and then guess which threshold it clears.

CPT is maintained and updated annually by its own editorial process, and the time thresholds for these codes are the operative rule at any given point — not a number you recall from training years ago 2Ref 2American Medical Association (2026).CPT® (Current Procedural Terminology).That CPT is maintained and updated annually by the AMA's editorial process, making the current definitions the operative rule.. Confirm you are working from the current definitions if you have any doubt, particularly after an annual CPT update.

A session that runs short of a threshold should be billed and coded to the time you actually delivered, with the note reflecting that reality, rather than adjusted upward to match the code you meant to bill.

Where start and stop times live in the record

Session start and stop times are explicitly the kind of content HIPAA's psychotherapy-notes definition carves out — along with treatment modality, frequency, and clinical test results — meaning they belong in the general progress note, not a separately shielded psychotherapy-notes file, even for clinicians who keep one 3Ref 3HHS Office for Civil Rights (2026).Does HIPAA provide extra protections for mental health information compared with other health information?.That session start and stop times are explicitly excluded from the psychotherapy-notes definition and belong in the general progress note.. The two kinds of notes distinction is exactly what determines where these times must live: if you keep a private process-notes file, times still need to appear in the ordinary chart entry a payer or auditor can actually reach.

That placement is not incidental: it is exactly what makes the times useful as billing support in the first place. A start and stop time recorded only in a private file that a routine request cannot reach defends nothing, because the record a reviewer sees would show a duration with no times behind it.

Put the times in a consistent, easy-to-find spot in your note template — a header field, not buried in narrative prose — so both you and any future reviewer can find them without reading the entire entry.

The one-visit, two-clocks problem: E/M plus psychotherapy

When a prescriber bills an evaluation and management visit with a psychotherapy add-on code at the same visit, two separate clocks are running, and the documentation has to keep them distinct: the E/M service can be level-set by total time under the current framework, while the add-on psychotherapy code still needs its own defined time separately accounted for, not blended into one combined duration 4Ref 4American Medical Association (2023).CPT evaluation and management (E/M) revisions.That E/M visits can be level-set by total time under the current framework, distinct from the separately timed psychotherapy add-on code at the same visit.. Two clocks, one visit is the shorthand worth remembering whenever these codes appear together.

The practical result is that a combined visit note needs two time statements, not one: the total time or medical decision making supporting the E/M level, and the separate psychotherapy minutes supporting the add-on code, kept visibly apart in the note rather than merged into a single number that could support either claim ambiguously.

This is the same discipline whether the visit runs in an office or over telehealth — a psychiatric prescriber operating primarily by video still needs the two clocks kept separate in the note, and current telepsychiatry guidance treats this time-accounting question as one of the operational basics of the format 5Ref 5American Psychiatric Association (2026).Telepsychiatry Toolkit.That keeping E/M and psychotherapy time accounting separate is treated as an operational basic of telepsychiatry practice, not an office-only concern..

What happens without them: the audit and denial risk

A billed time-based code without supporting start and stop times is a documentation gap an auditor is specifically trained to look for, because the time element is the entire basis for code selection — unlike many other CPT codes where multiple elements can independently justify the level billed. Medicare's own behavioral health coverage guidance frames time-based psychotherapy codes as tied to the documented duration of the service, which is exactly the element a missing time statement leaves unsupported 6Ref 6Centers for Medicare & Medicaid Services (2025).Medicare and Mental Health Coverage.That Medicare ties time-based psychotherapy codes to the documented duration of the service, the element a missing time statement leaves unsupported..

The downstream consequence is a recoupment risk, not just a stylistic critique: if an auditor cannot verify the billed duration from your note, the safer assumption from their side is the lower-paying code or an outright denial, and the burden falls on you to reconstruct support after the fact — a much harder position than simply having recorded the times as they happened.

A pattern of missing times across many sessions reads worse than a single gap; it signals a template or workflow problem rather than an isolated oversight, and it is the kind of pattern payer analytics are increasingly built to flag before a human reviewer ever looks at an individual chart.

Building the habit: templates and defaults that hold up

Put a start-time and stop-time field at the top of your note template, required before the note can be marked complete, so the habit is enforced by your workflow rather than by memory. If your EHR captures appointment scheduling times automatically, treat that as a starting point to confirm against, not a substitute for recording when the clinical service itself actually began and ended.

• At the start of session: note the clock time before you begin
• At the end of session: note the clock time immediately after, not at the end of your day
• In the note: state both times plus the resulting duration, so the arithmetic is visible
• When coding: select the CPT time band the actual duration falls into, not the one you intended to bill

Building time statements that hold up starts with this habit, not a more complicated system: the two clock times are a small addition to each note and one of the more reliable pieces of documentation you can build into a routine, given what they defend.