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

The International Classification of Diseases, Tenth Revision, Procedure Coding System (ICD-10-PCS) code group GZ10 includes procedures performed to administer and interpret psychological tests in developmental assessments. These ICD-10-PCS codes are used for inpatient documentation when standardized developmental testing and scoring are performed to evaluate cognitive, emotional, social, or adaptive functioning. Accurate coding within the ICD-10-PCS GZ10 group is essential for proper inpatient reimbursement, as it captures the procedure performed and supports clinical documentation accuracy.

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Developmental Psychological Tests Procedure Overview

This procedure group includes administration and interpretation of standardized psychological tests and measurement instruments focused on developmental functioning. These procedures are part of mental health services rather than targeting a physical body system, and they assess cognitive, social, emotional, and adaptive domains in patients. Accurate coding of these procedures in the inpatient setting supports proper documentation of services rendered and is important for appropriate reimbursement and case mix assignment.

Code Attributes

Character	ICD-10-PCS Category	Code Group Details
G	Section	Mental Health
Z	Body System	None
1	Operation	Psychological Tests
0	Body Part	Developmental

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Developmental Psychological Tests Procedure Overview

Code Attributes

Character	ICD-10-PCS Category	Code Group Details
G	Section	Mental Health
Z	Body System	None
1	Operation	Psychological Tests
0	Body Part	Developmental

When to Use

Use a code from this group when inpatient care includes formal developmental testing administered and interpreted by qualified personnel. These codes apply when documented testing procedures and interpretation are performed as part of the patients mental health assessment.

ICD-10-PCS Codes

1 rows

ICD-10-PCS Code	Description
GZ10ZZZ	Psychological Tests, Developmental

Typical Clinical Scenarios

A 3-year-old child is admitted from the emergency department after concerns for regression in speech and social interaction following a febrile illness. Inpatient multidisciplinary evaluation includes administration and scoring of standardized developmental instruments to assess cognitive, language, and social-emotional functioning to guide diagnostic formulation and immediate care planning. The developmental testing and interpretation are performed and documented by qualified clinical staff during the hospital stay. Typical codes: GZ10ZZZ
A school-age patient is admitted for a planned inpatient evaluation of complex learning and adaptive behavior problems that have not been resolved in outpatient settings. During the scheduled hospital stay, formal developmental assessment instruments are administered and interpreted to evaluate intellectual functioning, adaptive skills, and developmental milestones to inform individualized education and treatment recommendations. Results are documented in the inpatient record and used by the treatment team to coordinate discharge services. Typical codes: GZ10ZZZ
A pediatric patient previously treated for traumatic brain injury is readmitted because of new concerns about declining developmental progress and adaptive functioning. Repeat standardized developmental testing is administered and interpreted in the inpatient setting to compare current performance with prior assessments and to determine if changes in rehabilitation or support services are needed. The inpatient evaluation includes scoring and clinical interpretation documented by qualified personnel. Typical codes: GZ10ZZZ

ICD-10-PCS Code For Personality And Behavioral: Procedure Code Group Overview

GZ12-INTELLECTUAL-PSYCHOEDUCATIONAL-PSYCHOLOGICAL-TESTS

ICD-10-PCS Code For Intellectual And Psychoeducational: Procedure Code Group Overview

GZ13-NEUROPSYCHOLOGICAL-PSYCHOLOGICAL-TESTS

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

GZ14-NEUROBEHAVIORAL-AND-COGNITIVE-STATUS-PSYCHOLOGICAL-TESTS

ICD-10-PCS Code For Neurobehavioral And Cognitive Status: 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
GZ10ZZZ	Psychological Tests, Developmental

Typical Clinical Scenarios

A 3-year-old child is admitted from the emergency department after concerns for regression in speech and social interaction following a febrile illness. Inpatient multidisciplinary evaluation includes administration and scoring of standardized developmental instruments to assess cognitive, language, and social-emotional functioning to guide diagnostic formulation and immediate care planning. The developmental testing and interpretation are performed and documented by qualified clinical staff during the hospital stay. Typical codes: GZ10ZZZ
A school-age patient is admitted for a planned inpatient evaluation of complex learning and adaptive behavior problems that have not been resolved in outpatient settings. During the scheduled hospital stay, formal developmental assessment instruments are administered and interpreted to evaluate intellectual functioning, adaptive skills, and developmental milestones to inform individualized education and treatment recommendations. Results are documented in the inpatient record and used by the treatment team to coordinate discharge services. Typical codes: GZ10ZZZ
A pediatric patient previously treated for traumatic brain injury is readmitted because of new concerns about declining developmental progress and adaptive functioning. Repeat standardized developmental testing is administered and interpreted in the inpatient setting to compare current performance with prior assessments and to determine if changes in rehabilitation or support services are needed. The inpatient evaluation includes scoring and clinical interpretation documented by qualified personnel. Typical codes: GZ10ZZZ

ICD-10-PCS Code For Personality And Behavioral: Procedure Code Group Overview

GZ12-INTELLECTUAL-PSYCHOEDUCATIONAL-PSYCHOLOGICAL-TESTS

ICD-10-PCS Code For Intellectual And Psychoeducational: Procedure Code Group Overview

GZ13-NEUROPSYCHOLOGICAL-PSYCHOLOGICAL-TESTS

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

GZ14-NEUROBEHAVIORAL-AND-COGNITIVE-STATUS-PSYCHOLOGICAL-TESTS

ICD-10-PCS Code For Neurobehavioral And Cognitive Status: 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.

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

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Developmental Psychological Tests Procedure Overview

Code Attributes

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

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Developmental Psychological Tests Procedure Overview

Code Attributes

When to Use

ICD-10-PCS Codes

Typical Clinical Scenarios

Related Codes

References

When to Use

ICD-10-PCS Codes

Typical Clinical Scenarios

Related Codes

References

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

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

Developmental Psychological Tests Procedure Overview

Code Attributes

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

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

Developmental Psychological Tests Procedure Overview

Code Attributes

When to Use

ICD-10-PCS Codes

Typical Clinical Scenarios

Related Codes

What procedures are included in the GZ10 code group?

When should the `GZ10ZZZ` code be used in inpatient documentation?

What are the code attributes for the Developmental psychological tests group?

How does accurate coding within the GZ10 group affect reimbursement?

Are there related DRGs listed for the GZ10 code group?

References

When to Use

ICD-10-PCS Codes

Typical Clinical Scenarios

Related Codes

What procedures are included in the GZ10 code group?

When should the `GZ10ZZZ` code be used in inpatient documentation?

What are the code attributes for the Developmental psychological tests group?

How does accurate coding within the GZ10 group affect reimbursement?

Are there related DRGs listed for the GZ10 code group?

References