G9772 HCPCS Temperature Documentation Benchmarks | OpenPayer

Summary & Overview

HCPCS G9772: Perioperative Temperature Documentation for Exception to Threshold

HCPCS Level II code G9772 captures documentation of medical reasons why a perioperative temperature threshold was not met within the specified peri-anesthesia window. The code applies when clinicians record why at least one body temperature measurement of 35.5 °C (95.9 °F) was not obtained within 30 minutes before or 15 minutes after anesthesia end time, such as in emergency cases or when intentional hypothermia is induced. Nationally, this code matters for perioperative quality reporting and compliance with temperature-monitoring expectations tied to anesthesia safety protocols.

Key payers covered in this analysis include Aetna, Blue Cross Blue Shield, Cigna Health, UnitedHealthcare, and Medicare. Readers will find a concise explanation of the clinical and service context for G9772, typical sites of service, and what is known about documentation use. The publication summarizes available benchmarks and policy-relevant themes, highlights common modifiers associated with this service line, and outlines gaps where input data are not provided. This overview is intended for clinicians, coding professionals, and policy analysts seeking a clear national perspective on the code's purpose and documentation implications.

AetnaBlue Cross Blue ShieldCigna HealthUnitedHealthcareMedicareG9772HCPCS Level IIperioperativetemperature monitoringanesthesiapost-anesthesia carequality reportingdocumentation

Billing Code Overview

HCPCS Level II code G9772 documents the medical reason(s) for not achieving at least one body temperature measurement equal to or greater than 35.5 degrees Celsius (95.9 degrees Fahrenheit) within the 30 minutes immediately before or 15 minutes immediately after anesthesia end time. Examples include emergency cases and intentional hypothermia.

Service type: Perioperative documentation related to intraoperative or immediate postoperative temperature monitoring and exceptions

Typical site of service: Operating room and post-anesthesia care areas (PACU)

Data not available in the input.

Clinical & Coding Specifications

Clinical Context

A 68-year-old male undergoes an urgent laparotomy for a perforated diverticulitis under general anesthesia. Intraoperative temperatures are monitored but due to an approved, deliberate intraoperative therapeutic hypothermia protocol and emergent nature of the case, the patient does not have any recorded body temperature ≥ 35.5°C (95.9°F) in the 30 minutes before or 15 minutes after anesthesia end time. The surgical team documents the medical rationale (intentional hypothermia for neurologic protection and unstable hemodynamics limiting warming measures). Perioperative nursing and anesthesia records include continuous temperature monitoring, timestamps of anesthesia end, and the clinical justification for not achieving the threshold temperature. The coding/billing workflow captures documentation and assigns G9772 with an appropriate operative and anesthesia record entry, and appends applicable modifiers as indicated by payer rules.

Coding Specifications

Modifier	Description	When to Use
`23`	Unusual Anesthesia	Use when general anesthesia is administered for an emergency procedure that would normally be performed with local/regional anesthesia but required general due to emergency status.
`52`

HCPCS G0413: Percutaneous Fixation of Posterior Pelvic Fracture

HCPCS-G8722-PATHOLOGY-REPORT-PT-PN-GRADE-NOT-INCLUDED-JUSTIFICATION

HCPCS G8722: Pathology Report — Pt/Pn/Grade Not Included Justification

HCPCS-G8907-FACILITY-SAFETY-EVENT-ABSENCE-DOCUMENTATION

HCPCS G8907: Facility Documentation of No Specified Adverse Events

HCPCS-G0482-DEFINITIVE-MASS-SPECTROMETRY-DRUG-TESTING-15-21-CLASSES

HCPCS G0482: Definitive Mass-Spectrometry Drug Test, 15–21 Drug Classes

HCPCS-G0412-ILIAC-SPINE-TUBEROSITY-AVULSION-ILIAC-WING-FRACTURE-OPEN-TREATMENT

HCPCS G0412: Open Treatment of Iliac Spine or Iliac Wing Fracture

HCPCS-G9370-ANTIPSYCHOTIC-MEDICATION-NONADHERENCE

HCPCS G9370: Antipsychotic Medication Nonadherence

HCPCS-G8833-EVAR-POSTOPERATIVE-NOT-DISCHARGED-TO-HOME-DAY-2

HCPCS G8833: Post-Operative EVAR Patient Not Discharged to Home by Day 2

HCPCS-G8600-IV-THROMBOLYTIC-THERAPY-WITHIN-4-5-HOURS

HCPCS G8600: IV Thrombolytic Therapy Within 4.5 Hours of Last Known Well

HCPCS-G9874-MDPP-FOUR-CORE-SESSIONS-EXPANDED-MODEL

HCPCS G9874: MDPP Four Core Sessions, Expanded Model

HCPCS-G9646-90-DAY-MRS-0-2-FUNCTIONAL-OUTCOME

HCPCS G9646: 90-Day mRS 0–2 Functional Outcome

Showing 1–10 of 1996

Taxonomy Code	Specialty	Notes
`207P00000X`	Anesthesiology	Primary specialty responsible for intraoperative temperature monitoring and documentation supporting `G9772`.
`208000000X`	General Surgery	Operative team performing procedures where intraoperative hypothermia or emergency status may prevent meeting temperature threshold.
`363A00000X`	Critical Care Medicine	May manage patients with therapeutic hypothermia or severe instability affecting perioperative warming strategies.
`207L00000X`	Pain Medicine	Involved when regional techniques or hypothermia intersect with anesthesia plans affecting temperature goals.
`207LP2900X`	Pediatric Anesthesiology	Included when pediatric patients require specialized perioperative temperature management (if applicable).

Related Diagnoses

ICD-10 Code	Description	Clinical Relevance
`I97.820`	Hypothermia due to anesthesia	Directly relevant when anesthesia-related hypothermia explains lack of temperature ≥ 35.5°C.
`T68`	Hypothermia, unspecified	Represents clinically significant hypothermia as a reason for not meeting temperature threshold.
`D70.0`	Neutropenia due to drugs and biological substances	Example of a condition where intentional hypothermia may be contraindicated or variance documented (included as potential comorbidity).
`I46.9`	Cardiac arrest, cause unspecified	Emergency events such as cardiac arrest may necessitate therapeutic hypothermia or limit warming measures, justifying `G9772`.
`K57.20`	Diverticulitis of large intestine with perforation and without hemorrhage	Represents an emergency intra-abdominal condition where `G9772` may be used when temperature criteria are not met due to emergent care.

Related CPT Codes

CPT Code	Description	Relationship to This Procedure
`00540`	Anesthesia for procedures on the upper abdomen; not otherwise specified	Anesthesia CPT commonly billed for abdominal procedures where intraoperative temperature monitoring is required and `G9772` documents temperature exception.
`00840`	Anesthesia for intraperitoneal procedures in lower abdomen including laparoscopy; not otherwise specified	Used for laparoscopic or open abdominal procedures where inability to meet temperature threshold may be documented with `G9772`.
`99100`	Anesthesia for emergency or under unusual circumstances (separate reportable service)	Captures emergency anesthesia circumstances that often coincide with reasons for documenting `G9772`.
`99116`	Anesthesia complicated by emergency conditions or hyperthermia/hypothermia (add-on)	May be reported when anesthesia care is complicated by intraoperative temperature management issues relevant to `G9772`.
`01996`	Hemodialysis procedures under anesthesia (when applicable)	Example of concurrent procedures or interventions where temperature goals may be intentionally altered and documentation via `G9772` is required.

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