At Lloyds, we have a client base that extends over a wide range of hospitals, physician practices, and medical billing companies.
- Anesthesia is a state of temporary induced (Drug/Gas) loss of sensation or awareness. The CPT code range from 00100 – 01999 plus “Anesthesia modifier”.
- An Anesthesiologist, Anesthesia assistant or qualified non-physician anesthetist can provide Anesthesia service.
Included services
- Preoperative & Postoperative care
- Administration of fluids and/or Blood
- Monitoring services (Eg: BP, Temperature, ECG, Oximetry, Mass Spectrometry, and Capnography)
Exluded services
- Other Monitoring services like Central venous, Intra-arterial and Swan-Ganz
Anesthesia coding Guidelines
- Select the appropriate CPT code for the surgical procedure performed, and then select the appropriate ASA crosswalk code.
Select the base unit and time unit.
Select the appropriate modifier to identify the anesthesia provider.
Assign the appropriate Physical status modifier
Assign the appropriate qualifying circumstances codes if applicable.- How to calculate the Anesthesia Service for reimbursement is given below,
(Base unit + Total Time unit) x Conversion Factor = Allowance
Anesthesia Base Unit
http://www.cms.gov/Center/Provider-Type/Anesthesiologists-Center.html?redirect=/center/anesth.asp
Multiple procedures at the same session
Anesthesia Time Unit
- Start Time: The anesthesiologist begins to prepare the patient for the induction of anesthesia in the operating room. (Note: reviewing Medical Record before surgery is not considered)
- End Time: The anesthesiologist is no longer in personal attendance; the patient may be safely placed under postoperative supervision.
Time of anesthesia is calculated in units (Each 15 min = 1 unit)
Eg: A 45 minutes procedure (From start to finish) it is 3 units of anesthesia time. Do not round up or down the total time. (Total procedure time divided by 15)
Eg: For a 63-minute procedure, it is 4.2 time units
For a 79 minute procedure, it is 5.3 time units
Note: For certain insurance there may be round up or round down concepts applicable, anything below 7.5 minutes round down and above 8 min round up.
For Eg: 39 min should be considered as 3 units (15+15+9). And 37 min should be considered as 2 units (15+15+7).
Discontinuous Time
Eg: The anesthesiologist begins care at 9.00, care interrupted at 9.25 (25 minutes) and resumes care at 9.30 ending care at 9.55 (25 minutes), there would be 50 minutes of anesthesia time. This would be 3.3 Time units.
Conversion Factor
The anesthesia conversion factors: http://www.cms.gov/Center/Provider-Type/Anesthesiologists-Center.html
Anesthesia Modifiers
For Anesthesiologist
- AA: Anesthesia services performed personally by anesthesiologist (or) an anesthetist assists a physician in the care of a single patient.
- QY: Medical direction of one Qualified Non-physician
- QK: Medical direction of two, three or four concurrent anesthesia procedures involving qualified individuals.
- AD: Medical supervision by a physician: more than four concurrent anesthesia procedures.
For Non-physician Anesthetist
- QX: Qualified Non-physician Anesthetist service: with medical direction by a physician.
- QZ: Qualified Non-physician Anesthetist service: without medical direction by a physician.
For MAC (Monitored Anesthesia Care)
- QS: MAC (Can be billed by Qualified Non-physician Anesthetist / Anesthesia Assistant/physician)
- G8: MAC for deep complex or complicated / markedly invasive surgical procedure
- G9: MAC for a patient who has severe cardiopulmonary conditions
Physical Status Modifiers
- P1 – A normal healthy person (units = 0)
- P2 – A patient with mild systemic disease (units = 0)
- P3 – A patient with severe systemic disease (units = 1)
- P4 – A patient with severe systemic disease that is a constant threat to life (units = 2)
- P5 – A moribund patient who is not expected to survive without the operation (units = 3)
- P6 – A declared brain-dead patient whose organs are being removed for donor purposes (units = 0)
Eg: A patient has hypertension. Append modifier P2 (Systemic disease is not stated as uncontrolled)
A patient has uncontrolled DM – Append modifier P3 (Due to the severe systemic disease)
A patient met with an accident and is dead on arrival to the hospital – Append modifier P6 (is an organ donor)
Billing Guidelines
Physical Status Modifiers
- P1 – A normal healthy person (units = 0)
- P2 – A patient with mild systemic disease (units = 0)
- P3 – A patient with severe systemic disease (units = 1)
- P4 – A patient with severe systemic disease that is a constant threat to life (units = 2)
- P5 – A moribund patient who is not expected to survive without the operation (units = 3)
- P6 – A declared brain-dead patient whose organs are being removed for donor purposes (units = 0)
Eg: A patient has hypertension. Append modifier P2 (Systemic disease is not stated as uncontrolled)
A patient has uncontrolled DM – Append modifier P3 (Due to the severe systemic disease)
A patient met with an accident and is dead on arrival to the hospital – Append modifier P6 (is an organ donor)
Qualifying Circumstances
+99100 Anesthesia for a patient of extreme age, younger than 1 year and older than 70 (List separately in addition to code for primary anesthesia procedure) is 1 unit of anesthesia.
+99116 Anesthesia complicated by utilization of total body hypothermia (List separately in addition to code for primary anesthesia procedure)
+99135 Anesthesia complicated by utilization of controlled hypotension (List separately in addition to code for primary anesthesia procedure)
+99140 Anesthesia complicated by emergency conditions (specify) (List separately in addition to code for primary anesthesia procedure)
Important Abbreviations
CRNA: Certified registered nurse anesthelogist.
SRNA: Student registered nurse anesthetist.
MAC: Monitored anesthesia care