ICD-10-PCS Code For Physiological Systems: Procedure Code Group Overview

The International Classification of Diseases, Tenth Revision, Procedure Coding System (ICD-10-PCS) code group XXEZ includes procedures performed to measure physiological or physical function in the physiological systems body system. These ICD-10-PCS codes are used for inpatient documentation when clinicians perform objective assessments to determine the level of a physiological or physical function at a point in time. Accurate coding within the ICD-10-PCS XXEZ group is essential for proper inpatient reimbursement, as it captures procedure performed and supports clinical documentation accuracy.

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Physiological Systems Measurement Procedure Overview

This procedure group includes measurement procedures that determine the level of a physiological or physical function at a point in time and target the physiological systems body system. These procedures involve using instruments or tests to quantify function, capacity, or status rather than intervening surgically. Accurate coding of these measurements in inpatient records is important because it captures the clinical assessment performed and supports appropriate case mix assignment and payment.

Code Attributes

Character	ICD-10-PCS Category	Code Group Details
X	Section	New Technology
X	Body System	Physiological Systems
E	Operation	Measurement
Z	Body Part	None

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ICD-10-PCS Code For Physiological Systems: Procedure Code Group Overview

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Physiological Systems Measurement Procedure Overview

Code Attributes

Character	ICD-10-PCS Category	Code Group Details
X	Section	New Technology
X	Body System	Physiological Systems
E	Operation	Measurement
Z	Body Part	None

When to Use

Use a code from this group when a documented measurement procedure is performed during an inpatient encounter to determine the level of physiological or physical function at a specific point in time. Do not use these codes for ongoing therapy or interventions; they are intended for discrete diagnostic or assessment measurements.

ICD-10-PCS Codes

2 rows

ICD-10-PCS Code	Description
XXEZXAB	Measurement of Macronutrient Content, Computer-aided Assessment for Nutrition Management, New Technology Group 11
XXEZXCB	Measurement of Infection, Computer-aided Triage and Notification, New Technology Group 11

Typical Clinical Scenarios

An elderly patient admitted from a nursing facility with acute confusion and recent unintentional weight loss undergoes an inpatient nutritional assessment to quantify macronutrient intake and guide short-term feeding plans; a targeted, point-in-time computer-aided measurement of macronutrient content is performed to document current nutritional status for the admission record. Typical codes: XXEZXAB
A hospitalized patient with fever and sepsis workup requires rapid triage of possible infectious sources; on admission the team uses a computer-aided measurement tool to identify and quantify markers of infection for immediate notification and isolation decisions and to document the infection assessment at that point in time. Typical codes: XXEZXCB
A postoperative orthopaedic inpatient develops signs concerning for wound infection and the team conducts a discrete, time‑specific computerized infection measurement to determine presence and severity of infection for acute management and to record the physiologic assessment in the chart. Typical codes: XXEZXCB

Related Codes

XXE0-CENTRAL-NERVOUS-MEASUREMENT

ICD-10-PCS Code For Central Nervous: Procedure Code Group Overview

XXE2-CARDIAC-MEASUREMENT

ICD-10-PCS Code for Cardiac: Procedure Code Group Overview

XXE3-ARTERIAL-MEASUREMENT

ICD-10-PCS Code For Arterial: Procedure Code Group Overview

XXE5-CORONARY-MEASUREMENT

ICD-10-PCS Code For Circulatory: Procedure Code Group Overview

XXE9-NOSE-MEASUREMENT

ICD-10-PCS Code For Nose: Procedure Code Group Overview

Frequently Asked Questions

References

1.CPT® Codes and Descriptions. AAPC. Retrieved Aug 11, 2026.Maintains the CPT code set's official descriptions and guidelines, licensed from the American Medical Association, used as the definitional source for CPT codes on this page.
2.HCPCS Quarterly Update. Centers for Medicare & Medicaid Services (CMS). Retrieved Aug 11, 2026.CMS's quarterly release of HCPCS Level II codes and short/long descriptors, the source for HCPCS code definitions and update history.
3.ICD-10-CM Full Code List. Centers for Medicare & Medicaid Services (CMS). Retrieved Aug 11, 2026.CMS's complete ICD-10-CM diagnosis code list, used to cross-reference diagnosis codes associated with this procedure or service.

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When to Use

ICD-10-PCS Codes

2 rows

ICD-10-PCS Code	Description
XXEZXAB	Measurement of Macronutrient Content, Computer-aided Assessment for Nutrition Management, New Technology Group 11
XXEZXCB	Measurement of Infection, Computer-aided Triage and Notification, New Technology Group 11

Typical Clinical Scenarios

An elderly patient admitted from a nursing facility with acute confusion and recent unintentional weight loss undergoes an inpatient nutritional assessment to quantify macronutrient intake and guide short-term feeding plans; a targeted, point-in-time computer-aided measurement of macronutrient content is performed to document current nutritional status for the admission record. Typical codes: XXEZXAB
A hospitalized patient with fever and sepsis workup requires rapid triage of possible infectious sources; on admission the team uses a computer-aided measurement tool to identify and quantify markers of infection for immediate notification and isolation decisions and to document the infection assessment at that point in time. Typical codes: XXEZXCB
A postoperative orthopaedic inpatient develops signs concerning for wound infection and the team conducts a discrete, time‑specific computerized infection measurement to determine presence and severity of infection for acute management and to record the physiologic assessment in the chart. Typical codes: XXEZXCB

Related Codes

XXE0-CENTRAL-NERVOUS-MEASUREMENT

ICD-10-PCS Code For Central Nervous: Procedure Code Group Overview

XXE2-CARDIAC-MEASUREMENT

ICD-10-PCS Code for Cardiac: Procedure Code Group Overview

XXE3-ARTERIAL-MEASUREMENT

ICD-10-PCS Code For Arterial: Procedure Code Group Overview

XXE5-CORONARY-MEASUREMENT

ICD-10-PCS Code For Circulatory: Procedure Code Group Overview

XXE9-NOSE-MEASUREMENT

ICD-10-PCS Code For Nose: Procedure Code Group Overview

Frequently Asked Questions

References

1.CPT® Codes and Descriptions. AAPC. Retrieved Aug 11, 2026.Maintains the CPT code set's official descriptions and guidelines, licensed from the American Medical Association, used as the definitional source for CPT codes on this page.
2.HCPCS Quarterly Update. Centers for Medicare & Medicaid Services (CMS). Retrieved Aug 11, 2026.CMS's quarterly release of HCPCS Level II codes and short/long descriptors, the source for HCPCS code definitions and update history.
3.ICD-10-CM Full Code List. Centers for Medicare & Medicaid Services (CMS). Retrieved Aug 11, 2026.CMS's complete ICD-10-CM diagnosis code list, used to cross-reference diagnosis codes associated with this procedure or service.

Published by

Trek Health powers OpenPayer with a leading commercial payer intelligence platform, seamlessly converting fragmented payer data into actionable insights for provider organizations.

ICD-10-PCS Code For Physiological Systems: Procedure Code Group Overview

Sign up for ICD-10-PCS Code For Physiological Systems: Procedure Code Group Overview policy alerts

Physiological Systems Measurement Procedure Overview

Code Attributes

ICD-10-PCS Code For Physiological Systems: Procedure Code Group Overview

Sign up for ICD-10-PCS Code For Physiological Systems: Procedure Code Group Overview policy alerts

Physiological Systems Measurement Procedure Overview

Code Attributes

When to Use

ICD-10-PCS Codes

Typical Clinical Scenarios

Related Codes

Which body system does the ICD-10-PCS code group `xxez-physiological-function-determination` target?

What operation type is represented in the XXEZ procedure group?

How does accurate coding in the XXEZ group affect inpatient records?

What are the specific codes listed in this XXEZ group and how are they described?

Which ICD-10-PCS section and body part field apply to these codes?

References

When to Use

ICD-10-PCS Codes

Typical Clinical Scenarios

Related Codes

Which body system does the ICD-10-PCS code group `xxez-physiological-function-determination` target?

What operation type is represented in the XXEZ procedure group?

How does accurate coding in the XXEZ group affect inpatient records?

What are the specific codes listed in this XXEZ group and how are they described?

Which ICD-10-PCS section and body part field apply to these codes?

References