Z03.83UpcomingBillable / specificExempt from present-on-admission reporting

Encounter for observation for suspected conditions related to home physiologic monitoring device ruled out

Code-level instructions

Excludes 1

apnea NOS (R06.81)
neonatal bradycardia (P29.12)
newborn apnea (P28.4-)
primary sleep apnea of newborn (P28.3-)
sleep apnea (G47.3-)

Z03 · Inherited instructions

Excludes 1

contact with and (suspected) exposures hazardous to health (Z77.-)
encounter for observation and evaluation of newborn for suspected diseases and conditions ruled out (Z05.-)
person with feared complaint in whom no diagnosis is made (Z71.1)
signs or symptoms under study- code to signs or symptoms

Excludes 2 · 1

Z00-Z13 · Persons encountering health services for examinations (Z00-Z13)

Excludes 2

examinations related to pregnancy and reproduction (Z30-Z36, Z39.-)

Claims & coverage

Coverage depends on the payer, service and applicable policy. A billable code does not guarantee payment.

When ICD-10-CM is required

For US diagnosis claims covered by HIPAA, ICD-10-CM is required from October 1, 2015.

Use the service date for outpatient/professional claims and the discharge date for hospital inpatient claims. Earlier encounters use ICD-9-CM; each individual code must also be valid for the applicable date.

Official coding guidelines → · CMS ↗

Check Medicare coverage ↗

First observed · 2022-10-01

Code history

Latest recorded change · FY2026

ChangedUnchanged

FY2026

Effective from 2025-10-01

Inherited rules changed

Encounter for observation for suspected conditions related to home physiologic monitoring device ruled out

Billable diagnosis code

CDC/NCHS · FY2026

All editions (9)

All editions	Effective from	Code history
FY2023	2022-10-01	Added
FY2023 · 04-01	2023-04-01	No tabular change
FY2024	2023-10-01	No tabular change
FY2024 · 04-01	2024-04-01	No tabular change
FY2025	2024-10-01	No tabular change
FY2025 · 04-01	2025-04-01	No tabular change
FY2026	2025-10-01	Inherited rules changed
FY2026 · April	2026-04-01	No tabular change
FY2027	2026-10-01	No tabular change

Code-level instructions

Inclusion terms

Encounter for observation for apnea alarm without findings
Encounter for observation for bradycardia alarm without findings
Encounter for observation for malfunction of home cardiorespiratory monitor
Encounter for observation for non-specific findings home physiologic monitoring device
Encounter for observation for pulse oximeter alarm without findings

Excludes 1

apnea NOS (R06.81)
neonatal bradycardia (P29.12)
newborn apnea (P28.4-)
primary sleep apnea of newborn (P28.3-)
sleep apnea (G47.3-)

Inherited instructions

Chapters 21 · Factors influencing health status and contact with health services (Z00-Z99)

Note

Z codes represent reasons for encounters. A corresponding procedure code must accompany a Z code if a procedure is performed. Categories Z00-Z99 are provided for occasions when circumstances other than a disease, injury or external cause classifiable to categories A00-Y89 are recorded as 'diagnoses' or 'problems'. This can arise in two main ways:
(a) When a person who may or may not be sick encounters the health services for some specific purpose, such as to receive limited care or service for a current condition, to donate an organ or tissue, to receive prophylactic vaccination (immunization), or to discuss a problem which is in itself not a disease or injury.
(b) When some circumstance or problem is present which influences the person's health status but is not in itself a current illness or injury.

Z00-Z13 · Persons encountering health services for examinations (Z00-Z13)

Excludes 2

examinations related to pregnancy and reproduction (Z30-Z36, Z39.-)

Note

Nonspecific abnormal findings disclosed at the time of these examinations are classified to categories R70-R94.

Z03 · Encounter for medical observation for suspected diseases and conditions ruled out

Inclusion terms

This category is to be used when a person without a diagnosis is suspected of having an abnormal condition, without signs or symptoms, which requires study, but after examination and observation, is ruled out. This category is also for use for administrative and legal observation status.

Excludes 1

contact with and (suspected) exposures hazardous to health (Z77.-)
encounter for observation and evaluation of newborn for suspected diseases and conditions ruled out (Z05.-)
person with feared complaint in whom no diagnosis is made (Z71.1)
signs or symptoms under study- code to signs or symptoms

Official index references (6)

Encounter(with health service) (for) (6)

Official conversion history

Historical assignments from the CDC conversion table support data retrieval. They do not authorize substituting a previous code for the current code.

Release dates 2022-10-01

Previous assignment: Z03.89

Related codes

Other entries in the same category; these are not automatic substitutes.

Code	Description	Category · further specificity required
Z03.81	Encounter for observation for suspected exposure to biological agents ruled out	Category · further specificity required
Z03.82	Encounter for observation for suspected foreign body ruled out	Category · further specificity required
Z03.89	Encounter for observation for other suspected diseases and conditions ruled out	Billable / specific

Official titles and instructions are preserved in their source language. Official sources ↗

References from other codes (1)

Z05.81 · Observation and evaluation of newborn for suspected condition related to home physiologic monitoring device ruled out

Excludes 1 · encounter for observation for suspected conditions related to home physiologic monitoring device ruled out (Z03.83)

Z03.83UpcomingBillable / specificExempt from present-on-admission reporting

Encounter for observation for suspected conditions related to home physiologic monitoring device ruled out

Code-level instructions

Excludes 1

apnea NOS (R06.81)
neonatal bradycardia (P29.12)
newborn apnea (P28.4-)
primary sleep apnea of newborn (P28.3-)
sleep apnea (G47.3-)

Z03 · Inherited instructions

Excludes 1

contact with and (suspected) exposures hazardous to health (Z77.-)
encounter for observation and evaluation of newborn for suspected diseases and conditions ruled out (Z05.-)
person with feared complaint in whom no diagnosis is made (Z71.1)
signs or symptoms under study- code to signs or symptoms

Excludes 2 · 1

Z00-Z13 · Persons encountering health services for examinations (Z00-Z13)

Excludes 2

examinations related to pregnancy and reproduction (Z30-Z36, Z39.-)

Claims & coverage

Coverage depends on the payer, service and applicable policy. A billable code does not guarantee payment.

When ICD-10-CM is required

For US diagnosis claims covered by HIPAA, ICD-10-CM is required from October 1, 2015.

Official coding guidelines → · CMS ↗

Check Medicare coverage ↗

First observed · 2022-10-01

Code history

Latest recorded change · FY2026

ChangedUnchanged

FY2026

Effective from 2025-10-01

Inherited rules changed

Encounter for observation for suspected conditions related to home physiologic monitoring device ruled out

Billable diagnosis code

CDC/NCHS · FY2026

All editions (9)

All editions	Effective from	Code history
FY2023	2022-10-01	Added
FY2023 · 04-01	2023-04-01	No tabular change
FY2024	2023-10-01	No tabular change
FY2024 · 04-01	2024-04-01	No tabular change
FY2025	2024-10-01	No tabular change
FY2025 · 04-01	2025-04-01	No tabular change
FY2026	2025-10-01	Inherited rules changed
FY2026 · April	2026-04-01	No tabular change
FY2027	2026-10-01	No tabular change

Code-level instructions

Inclusion terms

Encounter for observation for apnea alarm without findings
Encounter for observation for bradycardia alarm without findings
Encounter for observation for malfunction of home cardiorespiratory monitor
Encounter for observation for non-specific findings home physiologic monitoring device
Encounter for observation for pulse oximeter alarm without findings

Excludes 1

apnea NOS (R06.81)
neonatal bradycardia (P29.12)
newborn apnea (P28.4-)
primary sleep apnea of newborn (P28.3-)
sleep apnea (G47.3-)

Inherited instructions

Chapters 21 · Factors influencing health status and contact with health services (Z00-Z99)

Note

Z codes represent reasons for encounters. A corresponding procedure code must accompany a Z code if a procedure is performed. Categories Z00-Z99 are provided for occasions when circumstances other than a disease, injury or external cause classifiable to categories A00-Y89 are recorded as 'diagnoses' or 'problems'. This can arise in two main ways:
(a) When a person who may or may not be sick encounters the health services for some specific purpose, such as to receive limited care or service for a current condition, to donate an organ or tissue, to receive prophylactic vaccination (immunization), or to discuss a problem which is in itself not a disease or injury.
(b) When some circumstance or problem is present which influences the person's health status but is not in itself a current illness or injury.

Z00-Z13 · Persons encountering health services for examinations (Z00-Z13)

Excludes 2

examinations related to pregnancy and reproduction (Z30-Z36, Z39.-)

Note

Nonspecific abnormal findings disclosed at the time of these examinations are classified to categories R70-R94.

Z03 · Encounter for medical observation for suspected diseases and conditions ruled out

Inclusion terms

Excludes 1

contact with and (suspected) exposures hazardous to health (Z77.-)
encounter for observation and evaluation of newborn for suspected diseases and conditions ruled out (Z05.-)
person with feared complaint in whom no diagnosis is made (Z71.1)
signs or symptoms under study- code to signs or symptoms

Official index references (6)

Encounter(with health service) (for) (6)

Official conversion history

Historical assignments from the CDC conversion table support data retrieval. They do not authorize substituting a previous code for the current code.

Release dates 2022-10-01

Previous assignment: Z03.89

Related codes

Other entries in the same category; these are not automatic substitutes.

Code	Description	Category · further specificity required
Z03.81	Encounter for observation for suspected exposure to biological agents ruled out	Category · further specificity required
Z03.82	Encounter for observation for suspected foreign body ruled out	Category · further specificity required
Z03.89	Encounter for observation for other suspected diseases and conditions ruled out	Billable / specific

Official titles and instructions are preserved in their source language. Official sources ↗

References from other codes (1)

Z05.81 · Observation and evaluation of newborn for suspected condition related to home physiologic monitoring device ruled out

Excludes 1 · encounter for observation for suspected conditions related to home physiologic monitoring device ruled out (Z03.83)