ICD-10-CM 2027 diagnosis code
Z03.823Encounter for observation for suspected inserted (injected) foreign body ruled out
Z03.823 is a valid, billable ICD-10-CM code for encounter for observation for suspected inserted (injected) foreign body ruled out. It can be reported on claims for dates of service from October 1, 2026 – September 30, 2027.Short description: Enctr for obs for suspected inserted (injected) fb ruled out
Code last changed in FY2021 (effective October 1, 2020). Source: official FY2027 ICD-10-CM release from CDC/NCHS and CMS. Page updated September 29, 2026. About our data
About Z03.823
Z03.823 is the ICD-10-CM diagnosis code for encounter for observation for suspected inserted (injected) foreign body ruled out. It belongs to category Z03 (encounter for medical observation for suspected diseases and conditions ruled out), block Z00-Z13 (persons encountering health services for examinations) and chapter 21 (factors influencing health status and contact with health services). It is billable, so it can be reported on its own for dates of service from October 1, 2026 through September 30, 2027.
Within Z03.82 (encounter for observation for suspected foreign body ruled out), Z03.823 is specifically for encounter for observation for suspected inserted (injected) foreign body ruled out. Related codes cover ingested foreign body ruled out (Z03.821) and aspirated (inhaled) foreign body ruled out (Z03.822).
It is not a CC or MCC, so as a secondary diagnosis it doesn't change the MS-DRG severity level.
In MS-DRG v44.0, it is part of the grouping logic for DRG 951 (Other Factors Influencing Health Status, relative weight 0.5577), in MDC 23 (Factors Influencing Health Status and Other Contacts with Health Services), as a principal or secondary diagnosis. The DRG a claim lands in depends on the principal diagnosis, procedures and any CC/MCC secondary diagnoses.
It is not acceptable as the principal diagnosis for an inpatient stay; it may be reported as a secondary diagnosis.
It is exempt from present-on-admission (POA) reporting, so no POA indicator is required.
It was added in FY2021, effective October 1, 2020.
Coding notes
- Encounter for observation for suspected inserted (injected) foreign body in eye ruled out
- Encounter for observation for suspected inserted (injected) foreign body in orifice ruled out
- Encounter for observation for suspected inserted (injected) foreign body in skin ruled out
Notes that apply from higher levels
Instructions written at a parent level also apply to Z03.823.
› From Z03 Encounter for medical observation for suspected diseases and conditions ruled out
Broader instructions also apply from Z00-Z13 Persons encountering health services for examinations and Chapter 21: Factors influencing health status and contact with health services.
Alphabetic index entries
1 entriesTerms in the official ICD-10-CM index that lead to Z03.823.
MS-DRG v44.0 grouping
All DRGs →Inpatient MS-DRGs this diagnosis can group to, as the principal or a secondary diagnosis, depending on the rest of the claim.
MDC 23 · Factors Influencing Health Status and Other Contacts with Health Services
Code history
- 2016
- 2017
- 2018
- 2019
- 2020
- 2021
- 2022
- 2023
- 2024
- 2025
- 2026
- 2027
- FY2021 (effective 10/1/2020): Added
- No changes since FY2021.
Common questions about Z03.823
Is Z03.823 billable?
- Yes. Z03.823 is a billable/specific ICD-10-CM code valid for FY2027 (October 1, 2026 – September 30, 2027).
Can Z03.823 be used as a principal diagnosis?
- No. It is not acceptable as the principal diagnosis for an inpatient stay; it may be reported as a secondary diagnosis.
Is Z03.823 a CC or MCC?
- No. Z03.823 is neither a CC nor an MCC under MS-DRG v44.0.
What DRG does Z03.823 group to?
- Z03.823 is used in the MS-DRG v44.0 logic for MS-DRG 951 (Other Factors Influencing Health Status). Which one applies depends on whether it is the principal diagnosis and on the rest of the claim.