ICD-10-CM 2026 · Chapter Z00-Z99

Factors influencing health status and contact with health services

15 sections · 1,844 total codes · 1,411 billable

15
Code Sections
1,844
Total Codes
1,411
Billable
12
Most-Searched

About Chapter Z00-Z99

ICD-10-CM Chapter Z00-Z99 covers factors influencing health status and contact with health services. The chapter contains 15 sections (code blocks) and 1,844 total codes - 1,411 are billable on a claim, the rest are non-billable headers used to organize the hierarchy.

Browse below by section, or jump straight to the most-billed codes in this chapter. Every code page includes Type 1/2 Excludes, Inclusion Terms, ICD-9 GEMs crosswalk, HCC mapping, LCD coverage, and payer-specific policies.

Most-Searched Diagnoses in This Chapter

Codes with the most LCD coverage, payer policies, and CPT linkages, proxies for what billers look up most.

Z94.1 Heart transplant status
1,920 refs
Z85.3 Personal history of malignant neoplasm of breast
1,289 refs
Z48.21 Encounter for aftercare following heart transplant
1,241 refs
Z85.038 Personal history of other malignant neoplasm of large intestine
1,227 refs
Z94.3 Heart and lungs transplant status
1,164 refs
Z94.0 Kidney transplant status
1,129 refs
Z85.048 Personal history of other malignant neoplasm of rectum, rectosigmoid junction, and anus
1,093 refs
Z94.2 Lung transplant status
994 refs
Z85.820 Personal history of malignant melanoma of skin
945 refs
Z09 Encounter for follow-up examination after completed treatment for conditions other than malignant neoplasm
884 refs
Z94.4 Liver transplant status
884 refs
Z85.43 Personal history of malignant neoplasm of ovary
839 refs

All Sections in Z00-Z99

Each section is a code block (e.g. E08-E13 = Diabetes mellitus). Click a section to see all codes inside.

Z00-Z13 Persons encountering health services for examinations
206 codes · 156 billable
Z14-Z15 Genetic carrier and genetic susceptibility to disease
24 codes · 18 billable
Z16 Resistance to antimicrobial drugs
24 codes · 19 billable
Z17 Estrogen, and other hormones and factors receptor status
16 codes · 10 billable
Z18 Retained foreign body fragments
19 codes · 14 billable
Z19 Hormone sensitivity malignancy status
3 codes · 2 billable
Z20-Z29 Persons with potential health hazards related to communicable diseases
85 codes · 65 billable
Z30-Z39 Persons encountering health services in circumstances related to reproduction
194 codes · 160 billable
Z40-Z53 Encounters for other specific health care
221 codes · 164 billable
Z55-Z65 Persons with potential health hazards related to socioeconomic and psychosocial circumstances
145 codes · 117 billable
Z66 Do not resuscitate status
1 codes · 1 billable
Z67 Blood type
21 codes · 14 billable
Z68 Body mass index (BMI)
37 codes · 32 billable
Z69-Z76 Persons encountering health services in other circumstances
109 codes · 85 billable
Z77-Z99 Persons with potential health hazards related to family and personal history and certain conditions influencing health status
739 codes · 554 billable
← Previous Chapter
V00-Y99
External causes of morbidity

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Verified against the CMS 2026 code set on May 31, 2026.

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