Z11.52 ICD-10-CM Code: Encounter for screening for COVID-19

Coding instructions

Official Tabular Instructional Notes: the inclusion, exclusion and sequencing notes published for Z11.52 in the official ICD-10-CM tabular list, quoted as published.

Source: CMS/CDC — ICD-10-CM Tabular ListRelease: FY2027Effective: October 1, 2026

Notes without a marker are published on Z11.52 itself; “inherited from” names the category or block whose note applies here.

Coder workflow for Z11.52

MedCoder structured workflow — derived from this code’s own official record

Before you code Z11.52

1. Confirm the reason for the encounter this Z code records: a screening — testing for disease in a patient without signs or symptoms; a test ordered for a documented sign, symptom or diagnosis is diagnostic, not screening. Check whether the code may be reported as first-listed or principal — some Z codes are limited to one position — and do not report a history or status code for a condition documented as current. Z code categories and their reporting positions (Guidelines I.C.21.c.5, I.C.21.c.15).

   Guide: Screening vs diagnostic →

2. Check the Excludes1 note: if the documentation supports a condition named there, do not simply proceed with Z11.52. Excludes1 conditions are not reported together with this code unless the record shows they are unrelated (Guidelines I.A.12.a).

   See the official tabular notes

Choose the right path

1. Does the documentation support a condition named in Z11.52’s Excludes1 note?
   Yes → Do not simply proceed: review the excluded code. Both are reported only when the record shows the two conditions are unrelated.
   No → Continue.

Consider Z11.52. Then confirm the code is valid for the date of service in the Verify section.

Documentation check

The provider’s diagnostic statement

Codes are assigned from the provider’s documented diagnosis, not from clinical criteria, test values or a medication list (Guidelines I.A.19).

The reason for the encounter

Whether the code records the encounter’s purpose, a status, or a history — and whether it may be first-listed (Guidelines I.C.21.c).

Official instructions as workflow

• Excludes1 — check before selecting Z11.52(1 note)

  Coding workflow: If the documentation supports a condition named in this note, do not simply proceed with Z11.52: the two are not reported together. The one exception is when the record shows the two conditions are unrelated to each other.

  See the official tabular notes · Guidelines I.A.12.a

• Excludes2 — not part of Z11.52(2 notes)

  Coding workflow: The conditions named in this note are not included in Z11.52. When the record documents both, both may be reported; the note is a boundary, not a prohibition.

  CompareZ11.0, Z39

  See the official tabular notes · Guidelines I.A.12.b

Coding decision scenarios

Pattern scenarios for this code’s structure — decision rules, not clinical cases

Every row is derived from this code’s own record — its title, tabular notes, 7th-character family and same-category siblings — with fixed MedCoder wording; nothing is inferred about a patient. The official notes and guideline text are in the sections each row links to, and they control.

Indexed Clinical Terms (9)

Official source data — entries quoted as published, in the Index’s own lookup phrasing

Clinical term phrases from the official ICD-10-CM Index to Diseases and Injuries that map to this code. These are alphabetic-index entries shown as the Index writes them — lookup phrasing, not necessarily the wording of a final diagnosis.

• COVID-19, screening
• Screening (for), coronavirus2019 (disease) (novel)
• Screening (for), COVID-19
• Screening (for), disease or disorder, coronavirus2019 (novel)
• Screening (for), disease or disorder, COVID-19
• Screening (for), disease or disorder, viral NEC, coronavirus2019 (novel)
• Screening (for), disease or disorder, viral NEC, COVID-19
• Screening (for), disease or disorder, viral NEC, SARS-CoV-2
• Screening (for), SARS-CoV-2

Official Coding Guidelines

Official source data — quoted verbatim from the CMS/NCHS Official Guidelines

Official source data — quoted verbatim from the CMS/NCHS Official Guidelines

Verbatim excerpts from the ICD-10-CM Official Guidelines for Coding and Reporting (CMS/NCHS) that govern this code.

Don’t confuse Z11.52 with…

MedCoder analysis — pairs from this code’s official notes, distinctions written by MedCoder

The codes most likely to be picked instead of Z11.52 — named in its own official notes, or sharing its laterality or encounter family — with what separates them and which documentation moves the case. Each links to the full comparison.

• Z11.0— Excludes2 relationship (Informational)

  Distinct conditions — both may be reported.

  A distinct condition — both may be reported when both are documented.

  What moves you there: Documentation of encounter for screening for viral intestinal disease adds Z11.0; it is not part of this code and both may be reported when both are documented.

  Full comparison: Z11.52 vs Z11.0 →

• Z30— Excludes2 relationship (Informational)

  Distinct conditions — both may be reported.

  A distinct condition — both may be reported when both are documented.

  What moves you there: Documentation of examinations related to pregnancy and reproduction adds Z30; it is not part of this code and both may be reported when both are documented.

  Full comparison: Z11.52 vs Z30 →

• Z36— Excludes2 relationship (Informational)

  Distinct conditions — both may be reported.

  A distinct condition — both may be reported when both are documented.

  What moves you there: Documentation of examinations related to pregnancy and reproduction adds Z36; it is not part of this code and both may be reported when both are documented.

  Full comparison: Z11.52 vs Z36 →

• Z39— Excludes2 relationship (Informational)

  Distinct conditions — both may be reported.

  A distinct condition — both may be reported when both are documented.

  What moves you there: Documentation of examinations related to pregnancy and reproduction adds Z39; it is not part of this code and both may be reported when both are documented.

  Full comparison: Z11.52 vs Z39 →

Relationships are read from this code's own official notes, its laterality siblings and its encounter family; the wording of each distinction is MedCoder editorial, and the documentation named in each “what moves you there” line is the official note phrase or sibling title itself. Source: CMS ICD-10-CM tabular instructional notes; ICD-10-CM Official Guidelines, Section I.A.12.a.

Verify Before Coding

• Principal-diagnosis restriction. The Medicare Code Editor lists this code as unacceptable as a principal diagnosis: it describes a circumstance influencing health status rather than a current illness or injury being treated. It is valid as a secondary diagnosis.

From the code registry, the Medicare Code Editor, and the MS-DRG Definitions Manual. Check it against a full claim in Claim Check.

Relationships & Classification

MedCoder structured relationships — computed from published CMS and AHRQ datasets

Other codes that name Z11.52 or its code family, from the CMS ICD-10-CM tabular instructional notes. Tabular-note edges are stored at the code family level that carries each note.

Referenced by 2 Excludes2 notes: Z00 — Encounter for general examination without complaint, suspected or reported diagnosis (via Z11.-), Z01 — Encounter for other special examination without complaint, suspected or reported diagnosis (via Z11.-).

These codes’ tabular lists name this diagnosis as distinct — both may be reported when both are documented.

MS-DRG Grouper Relationships (FY2027)

Potential MS-DRG participation — not a DRG assignment.

FY2027 MS-DRG: not on the CMS CC/MCC list — as a secondary diagnosis this code does not change MS-DRG severity for that release.

Named in the grouper logic of 1 MS-DRG: DRG 951 (MDC 23).

From the CMS MS-DRG Definitions Manual (Appendices B and C). Actual DRG assignment depends on the complete claim.

Clinical classification (AHRQ CCSR):FAC016 — Exposure, encounters, screening or contact with infectious disease (default).

Clinical Classifications Software Refined (CCSR) for ICD-10-CM Diagnoses. Healthcare Cost and Utilization Project (HCUP), Agency for Healthcare Research and Quality.

Related Codes

Principal diagnosis restriction (Medicare Code Editor)

Not acceptable as a principal diagnosis on an inpatient claim.

Same clinical category (CCSR)

AHRQ's Clinical Classifications Software groups these diagnoses under the same clinical category (Exposure, encounters, screening or contact with infectious disease).

G04.32 — Postimmunization acute necrotizing hemorrhagic encephalopathy, Z03.810 — Encounter for observation for suspected exposure to anthrax ruled out, Z03.818 — Encounter for observation for suspected exposure to other biological agents ruled out, Z05.1 — Observation and evaluation of newborn for suspected infectious condition ruled out, Z11.0 — Encounter for screening for intestinal infectious diseases, Z11.1 — Encounter for screening for respiratory tuberculosis, Z11.2 — Encounter for screening for other bacterial diseases, Z11.3 — Encounter for screening for infections with a predominantly sexual mode of transmission, Z11.4 — Encounter for screening for human immunodeficiency virus [HIV], Z11.51 — Encounter for screening for human papillomavirus (HPV), Z11.59 — Encounter for screening for other viral diseases, Z11.6 — Encounter for screening for other protozoal diseases and helminthiases, Z11.7 — Encounter for testing for latent tuberculosis infection, Z11.8 — Encounter for screening for other infectious and parasitic diseases, Z11.9 — Encounter for screening for infectious and parasitic diseases, unspecified, Z20.01 — Contact with and (suspected) exposure to intestinal infectious diseases due to Escherichia coli (E. coli), Z20.09 — Contact with and (suspected) exposure to other intestinal infectious diseases, Z20.1 — Contact with and (suspected) exposure to tuberculosis, Z20.2 — Contact with and (suspected) exposure to infections with a predominantly sexual mode of transmission, Z20.3 — Contact with and (suspected) exposure to rabies, +15 more

Same Index main term, other category

The ICD-10-CM Index to Diseases and Injuries files this code under the main terms “Screening”, “COVID-19”; these codes share that main term but sit in a different category of the Tabular List.

J12.82 — Pneumonia due to coronavirus disease 2019 (pneumonia), U07.1 — COVID-19, U09.9 — Post COVID-19 condition, unspecified (long), Z00.121 — Encounter for routine child health examination with abnormal findings (infant or child, with abnormal findings), Z00.129 — Encounter for routine child health examination without abnormal findings (infant or child), Z12.0 — Encounter for screening for malignant neoplasm of stomach (neoplasm, stomach), Z12.10 — Encounter for screening for malignant neoplasm of intestinal tract, unspecified (neoplasm, intestinal tract), Z12.11 — Encounter for screening for malignant neoplasm of colon (colonoscopy), Z12.12 — Encounter for screening for malignant neoplasm of rectum (neoplasm, rectum), Z12.13 — Encounter for screening for malignant neoplasm of small intestine (neoplasm, small intestine), Z12.2 — Encounter for screening for malignant neoplasm of respiratory organs (neoplasm, lung), Z12.31 — Encounter for screening mammogram for malignant neoplasm of breast (neoplasm, breast, routine mammogram), Z12.39 — Encounter for other screening for malignant neoplasm of breast (neoplasm, breast), Z12.4 — Encounter for screening for malignant neoplasm of cervix (neoplasm, cervix), Z12.5 — Encounter for screening for malignant neoplasm of prostate (neoplasm, prostate), Z12.6 — Encounter for screening for malignant neoplasm of bladder (neoplasm, bladder), Z12.71 — Encounter for screening for malignant neoplasm of testis (neoplasm, genitourinary organs NEC, testis), Z12.72 — Encounter for screening for malignant neoplasm of vagina (neoplasm, genitourinary organs NEC, vagina), Z12.73 — Encounter for screening for malignant neoplasm of ovary (neoplasm, genitourinary organs NEC, ovary), Z12.79 — Encounter for screening for malignant neoplasm of other genitourinary organs (neoplasm, genitourinary organs NEC), +40 more

Contextual Map

Every relationship of Z11.52 in one view: hierarchy, official tabular instructions in both directions, clinical classification, risk adjustment, MS-DRG participation, index terms and change history — each edge carrying the CMS source it derives from.

Run Z11.52 with these 2 related codes in Claim Check

Hierarchy

• Z00-Z99 — Chapter 21: Factors Influencing Health Status and Contact with Health Services (Z00-Z99) (Z00-Z99)[Hierarchy]— CMS ICD-10-CM tabular structure · icd10cm-fy2026
• Z00-Z13 — Persons encountering health services for examinations[Hierarchy]— CMS ICD-10-CM tabular structure · icd10cm-fy2026

Referenced by Excludes2 notes

• Z00 — Encounter for general examination without complaint, suspected or reported diagnosis[Excludes2](via Z11.-): “special screening examinations (Z11-Z13)”— CMS ICD-10-CM tabular instructional notes · icd10cm-fy2026
• Z01 — Encounter for other special examination without complaint, suspected or reported diagnosis[Excludes2](via Z11.-): “screening examinations (Z11-Z13)”— CMS ICD-10-CM tabular instructional notes · icd10cm-fy2026

Clinical classification (CCSR)

• FAC016 — Exposure, encounters, screening or contact with infectious disease[CCSR]— AHRQ CCSR for ICD-10-CM Diagnoses (HCUP)

MS-DRG Grouper

• DRG 951 — OTHER FACTORS INFLUENCING HEALTH STATUS[MS-DRG]: “OTHER FACTORS INFLUENCING HEALTH STATUS (MDC 23)”— CMS MS-DRG Definitions Manual (Appendix B) · FY2027

MDC crossing

• MDC 23 — Factors Influencing Health Status and Other Contacts with Health Services[MDC crossing]: “Factors Influencing Health Status and Other Contacts with Health Services — the grouper's crossing between diagnoses and procedures: a principal diagnosis sets the MDC, and same-MDC procedures move the stay to its surgical DRGs. 1,258 same-MDC procedures group here; browse them on the MDC page.”— CMS MS-DRG Definitions Manual · FY2027

Index entries (9)

• COVID-19, screening[Index term]— CMS ICD-10-CM Index to Diseases and Injuries · icd10cm-fy2026
• Screening (for), coronavirus2019 (disease) (novel)[Index term]— CMS ICD-10-CM Index to Diseases and Injuries · icd10cm-fy2026
• Screening (for), COVID-19[Index term]— CMS ICD-10-CM Index to Diseases and Injuries · icd10cm-fy2026
• Screening (for), disease or disorder, coronavirus2019 (novel)[Index term]— CMS ICD-10-CM Index to Diseases and Injuries · icd10cm-fy2026
• Screening (for), disease or disorder, COVID-19[Index term]— CMS ICD-10-CM Index to Diseases and Injuries · icd10cm-fy2026
• Screening (for), disease or disorder, viral NEC, coronavirus2019 (novel)[Index term]— CMS ICD-10-CM Index to Diseases and Injuries · icd10cm-fy2026
• Screening (for), disease or disorder, viral NEC, COVID-19[Index term]— CMS ICD-10-CM Index to Diseases and Injuries · icd10cm-fy2026
• Screening (for), disease or disorder, viral NEC, SARS-CoV-2[Index term]— CMS ICD-10-CM Index to Diseases and Injuries · icd10cm-fy2026
• and 1 more

Nearest codes (13)

• Z11 — Encounter for screening for infectious and parasitic diseases[Sibling]— CMS ICD-10-CM tabular structure · icd10cm-fy2026
• Z11.0 — Encounter for screening for intestinal infectious diseases[Sibling]— CMS ICD-10-CM tabular structure · icd10cm-fy2026
• Z11.1 — Encounter for screening for respiratory tuberculosis[Sibling]— CMS ICD-10-CM tabular structure · icd10cm-fy2026
• Z11.2 — Encounter for screening for other bacterial diseases[Sibling]— CMS ICD-10-CM tabular structure · icd10cm-fy2026
• Z11.3 — Encounter for screening for infections with a predominantly sexual mode of transmission[Sibling]— CMS ICD-10-CM tabular structure · icd10cm-fy2026
• Z11.4 — Encounter for screening for human immunodeficiency virus [HIV][Sibling]— CMS ICD-10-CM tabular structure · icd10cm-fy2026
• Z11.5 — Encounter for screening for other viral diseases[Sibling]— CMS ICD-10-CM tabular structure · icd10cm-fy2026
• Z11.51 — Encounter for screening for human papillomavirus (HPV)[Sibling]— CMS ICD-10-CM tabular structure · icd10cm-fy2026
• and 5 more

Change history

• FY2022 — Added to the code set[Change history]— CMS release files (code change ledger) · icd10cm-fy2022

Sources for this page

Codes, titles, notes, index terms and mappings on this page are transcribed from the datasets below. Relationships MedCoder computed and text MedCoder wrote are labelled where they appear.

Code, title, tabular notes and index terms Official source data

CMS/CDC ICD-10-CM FY2027 tabular list, index and tables, effective October 1, 2026 Release, file and checksum · Publisher’s page

Coding guidelines Official source data

ICD-10-CM Official Guidelines for Coding and Reporting (FY2027), quoted by section Release, file and checksum · Publisher’s page

Claim edits Official source data

CMS Definitions of Medicare Code Edits — v44.0 (October 2026) Release, file and checksum · Publisher’s page

Inpatient payment groups Official source data

CMS MS-DRG Definitions Manual (incl. Appendix B diagnosis index, Appendix C CC/MCC list, Appendix E procedure index) and IPPS Final Rule tables — v44 Release, file and checksum · Publisher’s page

Change history and date-of-service validity Official source data

CMS ICD-10-CM release addenda, ingested release by release into the change ledger Release, file and checksum · Publisher’s page

Comparisons, relationships and the contextual map MedCoder structured relationship

Computed by MedCoder from the tabular notes and tables above; every derived relationship is marked as derived where it appears

Summary and FAQ answers MedCoder explanation

Written by MedCoder to explain the sources above: drafted with AI assistance, checked by a person against the release files, and labelled as MedCoder text where it appears. Not official text.

Labels on this page: Official source data · MedCoder structured relationship · MedCoder explanation. How to read the labels · All data sources and release dates

Nearest Codes in This Family

Official ICD-10-CM classifications closest to Z11.52 in its code family, with their registry titles.

• Z11.2 — Encounter for screening for other bacterial diseases
• Z11.3 — Encounter for screening for infections with a predominantly sexual mode of transmission
• Z11.4 — Encounter for screening for human immunodeficiency virus [HIV]
• Z11.5 — Encounter for screening for other viral diseases
• Z11.51 — Encounter for screening for human papillomavirus (HPV)
• Z11.59 — Encounter for screening for other viral diseases
• Z11.6 — Encounter for screening for other protozoal diseases and helminthiases
• Z11.7 — Encounter for testing for latent tuberculosis infection
• Z11.8 — Encounter for screening for other infectious and parasitic diseases
• Z11.9 — Encounter for screening for infectious and parasitic diseases, unspecified

View all codes in the Z11 family