ICD-10-PCS Code For Left Kidney: Procedure Code Group Overview

The International Classification of Diseases, Tenth Revision, Procedure Coding System (ICD-10-PCS) code group BT42 includes procedures performed to image structures in the left kidney. These ICD-10-PCS codes are used for inpatient documentation when real-time ultrasound imaging of the left kidney is performed for diagnostic evaluation or image guidance. Accurate coding within the ICD-10-PCS BT42 group is essential for proper inpatient reimbursement, as it captures the imaging procedure performed and supports clinical documentation accuracy.

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Left Kidney Ultrasonography Procedure Overview

This procedure group includes real-time ultrasonography of the left kidney, targeting the urinary system to visualize renal structure and blood flow using reflected high-frequency sound waves. These procedures involve capture and display of ultrasound images for diagnostic evaluation or guidance of interventions. Accurate ICD-10-PCS coding ensures the inpatient record reflects the imaging performed and supports correct reimbursement and hospital case mix assignment.

Code Attributes

Character	ICD-10-PCS Category	Code Group Details
B	Section	Imaging
T	Body System	Urinary System
4	Operation	Ultrasonography
2	Body Part	Kidney, Left

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ICD-10-PCS Code For Left Kidney: Procedure Code Group Overview

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Left Kidney Ultrasonography Procedure Overview

Code Attributes

Character	ICD-10-PCS Category	Code Group Details
B	Section	Imaging
T	Body System	Urinary System
4	Operation	Ultrasonography
2	Body Part	Kidney, Left

When to Use

Use a code from this group when real-time ultrasound imaging of the left kidney is performed during an inpatient encounter for diagnostic assessment or image-guided management. These codes apply when the procedure captures and displays renal anatomy or flow information for clinical decision making.

ICD-10-PCS Codes

1 rows

ICD-10-PCS Code	Description
BT42ZZZ	Ultrasonography of Left Kidney

Typical Clinical Scenarios

A middle-aged patient is admitted through the emergency department with acute left flank pain, hematuria, and suspected obstructing ureteral stone causing hydronephrosis on initial assessment; inpatient evaluation requires rapid bedside imaging to assess left renal size, collecting system dilation, and perfusion before urology consultation. A real-time ultrasound of the left kidney is performed to visualize hydronephrosis and guide urgent management decisions. Typical codes: BT42ZZZ
An elderly patient is hospitalized for evaluation of newly discovered chronic kidney disease with asymmetrical renal function on labs and a history of recurrent left renal cysts; the inpatient team requests detailed imaging to characterize left renal parenchyma and cystic lesions without contrast. Real-time ultrasonography of the left kidney is used to assess renal morphology, measure kidney size, and document cyst features during the admission. Typical codes: BT42ZZZ
A post-operative inpatient develops unexplained left flank swelling and decreased urine output after recent abdominal intervention; clinicians suspect a perinephric fluid collection or hematoma affecting the left kidney and need bedside imaging to guide potential drainage or monitor progression. Point-of-care ultrasonography of the left kidney is performed to identify fluid collections, assess renal perfusion indirectly, and aid in planning any image-guided procedures. Typical codes: BT42ZZZ

Related Codes

BT40-BLADDER-ULTRASONOGRAPHY

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

BT41-RIGHT-KIDNEY-ULTRASONOGRAPHY

ICD-10-PCS Code For Right Kidney: Procedure Code Group Overview

BT43-KIDNEYS-ULTRASONOGRAPHY

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

BT45-URETHRA-ULTRASONOGRAPHY

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

BT46-RIGHT-URETER-ULTRASONOGRAPHY

ICD-10-PCS Code For Right Ureter: Procedure Code Group Overview

BT47-LEFT-URETER-ULTRASONOGRAPHY

ICD-10-PCS Code For Left Ureter: Procedure Code Group Overview

BT48-URETERS-ULTRASONOGRAPHY

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

BT49-KIDNEY-TRANSPLANT-ULTRASONOGRAPHY

ICD-10-PCS Code For Kidney Transplant: Procedure Code Group Overview

BT4J-KIDNEYS-AND-BLADDER-ULTRASONOGRAPHY

ICD-10-PCS Code For Kidneys And Bladder: 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

1 rows

ICD-10-PCS Code	Description
BT42ZZZ	Ultrasonography of Left Kidney

Typical Clinical Scenarios

A middle-aged patient is admitted through the emergency department with acute left flank pain, hematuria, and suspected obstructing ureteral stone causing hydronephrosis on initial assessment; inpatient evaluation requires rapid bedside imaging to assess left renal size, collecting system dilation, and perfusion before urology consultation. A real-time ultrasound of the left kidney is performed to visualize hydronephrosis and guide urgent management decisions. Typical codes: BT42ZZZ
An elderly patient is hospitalized for evaluation of newly discovered chronic kidney disease with asymmetrical renal function on labs and a history of recurrent left renal cysts; the inpatient team requests detailed imaging to characterize left renal parenchyma and cystic lesions without contrast. Real-time ultrasonography of the left kidney is used to assess renal morphology, measure kidney size, and document cyst features during the admission. Typical codes: BT42ZZZ
A post-operative inpatient develops unexplained left flank swelling and decreased urine output after recent abdominal intervention; clinicians suspect a perinephric fluid collection or hematoma affecting the left kidney and need bedside imaging to guide potential drainage or monitor progression. Point-of-care ultrasonography of the left kidney is performed to identify fluid collections, assess renal perfusion indirectly, and aid in planning any image-guided procedures. Typical codes: BT42ZZZ

Related Codes

BT40-BLADDER-ULTRASONOGRAPHY

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

BT41-RIGHT-KIDNEY-ULTRASONOGRAPHY

ICD-10-PCS Code For Right Kidney: Procedure Code Group Overview

BT43-KIDNEYS-ULTRASONOGRAPHY

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

BT45-URETHRA-ULTRASONOGRAPHY

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

BT46-RIGHT-URETER-ULTRASONOGRAPHY

ICD-10-PCS Code For Right Ureter: Procedure Code Group Overview

BT47-LEFT-URETER-ULTRASONOGRAPHY

ICD-10-PCS Code For Left Ureter: Procedure Code Group Overview

BT48-URETERS-ULTRASONOGRAPHY

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

BT49-KIDNEY-TRANSPLANT-ULTRASONOGRAPHY

ICD-10-PCS Code For Kidney Transplant: Procedure Code Group Overview

BT4J-KIDNEYS-AND-BLADDER-ULTRASONOGRAPHY

ICD-10-PCS Code For Kidneys And Bladder: 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 Left Kidney: Procedure Code Group Overview

Sign up for ICD-10-PCS Code For Left Kidney: Procedure Code Group Overview policy alerts

Left Kidney Ultrasonography Procedure Overview

Code Attributes

ICD-10-PCS Code For Left Kidney: Procedure Code Group Overview

Sign up for ICD-10-PCS Code For Left Kidney: Procedure Code Group Overview policy alerts

Left Kidney Ultrasonography Procedure Overview

Code Attributes

When to Use

ICD-10-PCS Codes

Typical Clinical Scenarios

Related Codes

Which ICD-10-PCS code identifies ultrasonography of the left kidney?

What clinical purpose does the `BT42ZZZ` procedure code serve?

Under which ICD-10-PCS section and body system is `BT42ZZZ` classified?

How does accurate coding with `BT42ZZZ` impact inpatient records?

When should `BT42ZZZ` be used in documentation?

References

When to Use

ICD-10-PCS Codes

Typical Clinical Scenarios

Related Codes

Which ICD-10-PCS code identifies ultrasonography of the left kidney?

What clinical purpose does the `BT42ZZZ` procedure code serve?

Under which ICD-10-PCS section and body system is `BT42ZZZ` classified?

How does accurate coding with `BT42ZZZ` impact inpatient records?

When should `BT42ZZZ` be used in documentation?

References