Each minute can only count for time spent on one particular patient. The time does not need to be continuous, but cannot count for multiple patients simultaneously. Multitasking really means your are switching between tasks. It is physically impossible to chart 2 different patient notes at the exact same time.
I have not seen requirements to state the actual time, only the actual minutes. For example, many providers spend some time before seeing patients for the day "prepping" for the first couple of patients. Then spend lunch completing documentation or prepping for afternoon patients. And after seeing patients for the day, spend time at the computer charting/orders/etc.
So Patient A might be 40 minutes, but was really 8:05a-8:27a, then 8:43a-8:53a, then 12:02p-12:10p. Patient B might be 30 minutes as 8:40a-8:42a, 8:54a-9:10a, 11:42a-11:50a. It is NOT necessary to track the time that way. You'd have to walk around all day with a stopwatch.
Or if the note said "spent 27 minutes intermittently from 8:05a-8:45a.....", I would find that acceptable as you are not counting all 40 minutes. But again, not necessary.
From AMA guidelines:
For coding purposes, time for these services is the total time on the date of the encounter. It includes both the face-to-face time with the patient and/or family/caregiver and non-face-to-face time personally spent by the physician and/or other qualified health care professional(s) on the day of the encounter (includes time in activities that require the physician or other qualified health care professional and does not include time in activities normally performed by clinical staff). It includes time regardless of the location of the physician or other qualified health care professional (eg, whether on or off the inpatient unit or in or out of the outpatient office). It does not include any time spent in the performance of other separately reported service(s).
Physician or other qualified health care professional time includes the following activities, when performed:
■ preparing to see the patient (eg, review of tests)
■ obtaining and/or reviewing separately obtained history
■ performing a medically appropriate examination and/or evaluation
■ counseling and educating the patient/family/caregiver
■ ordering medications, tests, or procedures
■ referring and communicating with other health care professionals (when not separately reported)
■ documenting clinical information in the electronic or other health record
■ independently interpreting results (not separately reported) and communicating results to the patient/family/caregiver
■ care coordination (not separately reported)◄
Do not count time spent on the following:
■ the performance of other services that are reported separately
■ travel
■ teaching that is general and not limited to discussion that is required for the management of a specific patient
I also stand by my overall belief that for most physicians/specialties/patients, you can reach a level of service by MDM in less physician time than the time descriptors. Appropriately trained/utilized staff and appropriate use/customization of EHR systems would not typically take a clinician 30 minutes of CLINICIAN time to order 3 tests and renew a prescription for a patient with stable elevated cholesterol. There are always exceptions, but when I see a clinician coding every visit based on time, it makes me suspicious.