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R31.29 ICD-10-CM Code: Other microscopic hematuria

Billing Status: YES. This is a valid, specific, and billable ICD-10-CM reference.

Coding at a Glance

Tabular directives
3 Excludes1

Inpatient Payment Groups (MS-DRG)

Potential MS-DRG participation — not a DRG assignment.

MS-DRGs this diagnosis helps define, as principal or secondary, per the CMS ICD-10-CM/PCS MS-DRG Definitions Manual v43, Appendix B.

  • MS-DRG 695 — KIDNEY AND URINARY TRACT SIGNS AND SYMPTOMS WITH MCC (MDC 11)
  • MS-DRG 696 — KIDNEY AND URINARY TRACT SIGNS AND SYMPTOMS WITHOUT MCC (MDC 11)
  • MS-DRG 791 — PREMATURITY WITH MAJOR PROBLEMS (MDC 15)
  • MS-DRG 793 — FULL TERM NEONATE WITH MAJOR PROBLEMS (MDC 15)

A diagnosis appearing in a group's logic does not by itself determine the DRG assigned to a stay; the grouper uses the full claim.

Coding instructions

Official Tabular Instructional Notes: the inclusion, exclusion and sequencing notes published for R31.29 in the official ICD-10-CM tabular list, quoted as published.

Source: CMS/CDC — ICD-10-CM Tabular ListRelease: FY2026Effective: October 1, 2025

Notes without a marker are published on R31.29 itself; “inherited from” names the category or block whose note applies here.

Excludes1 — Not Coded Here

Conditions generally not reported together with this code (Excludes1) -- an error unless the two conditions are documented as unrelated to each other (ICD-10-CM Official Guidelines, Section I.A.12.a).

Source: inherited from R31

Coder workflow for R31.29

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

Before you code R31.29

  1. Check whether an established diagnosis that explains this sign or symptom is documented. If one is, review whether the documented diagnosis changes the coding pathway: a symptom that is integral to a confirmed diagnosis is not reported separately, while one not routinely associated with it may be. Signs and symptoms are reported when no definitive diagnosis is established (Guidelines I.B.4, I.B.5, I.B.6, I.C.18.b).

    Guide: Symptom code vs confirmed diagnosis →

  2. “Other” (NEC) means the condition is specified in the record but no dedicated code captures it. Confirm the documented form is not one a sibling code names before settling on R31.29; if the record states no specifics at all, the unspecified sibling applies instead. “Other” codes are for documented conditions the classification gives no specific code; “unspecified” codes are for records lacking the detail (Guidelines I.A.9.a, I.A.9.b).

    ReviewR31.21

    See the relationships section · Guide: Other vs unspecified (NEC vs NOS) →

  3. Check the Excludes1 note: if the documentation supports a condition named there, do not simply proceed with R31.29. 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. Is an established diagnosis that explains this sign or symptom documented?
    Yes → Review whether the documented diagnosis changes the coding pathway: a symptom integral to it is not reported separately.
    No → Continue — the sign or symptom code stands when no definitive diagnosis is established.
  2. Does the documentation support a condition named in R31.29’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.

    ReviewN30.01, N02

Consider R31.29. 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).
Any detail beyond this code’s title
What the record states that a more specific sibling code would capture — or its absence, which itself supports the unspecified code.

Official instructions as workflow

  • Excludes1 — check before selecting R31.29(3 notes)

    Coding workflow: If the documentation supports a condition named in this note, do not simply proceed with R31.29: the two are not reported together. The one exception is when the record shows the two conditions are unrelated to each other.

    CompareN30.01, N02

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

Coding decision scenarios

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

Documentation: The sign or symptom is documented, and the same record establishes a diagnosis that routinely includes it.

Coding question: Is R31.29 reported in addition to the diagnosis?

Path: Review the documented diagnosis and whether the classification treats this finding as integral to it.

Reason: Signs and symptoms integral to a confirmed diagnosis are not coded separately; those not routinely associated with it may be reported when present (Guidelines I.B.5, I.B.6, I.C.18.b).

Documentation: Both the condition R31.29 describes and a condition named in its Excludes1 note are documented for the same encounter.

Coding question: Can both codes be reported?

Path: Review the Excludes1 note and the excluded code, and look for a provider statement on whether the two conditions are related.

Reason: Excludes1 means the two are not coded together; the exception is when the record shows the conditions are unrelated to each other (Guidelines I.A.12.a).

ReviewN30.01, N02

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.

Code Overview

Other microscopic hematuria is a billable ICD-10-CM diagnosis code (R31.29).

MedCoder summary Summary composed by MedCoder from this code's official ICD-10-CM record. The tabular instructional notes themselves appear verbatim below.

Indexed Clinical Terms (1)

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.

Verify Before Coding

  • No Medicare Code Editor or MS-DRG Definitions Manual restrictions apply to this code.

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 R31.29 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 Excludes1 notes: N02 — Recurrent and persistent hematuria (via R31.-), N42.1 — Congestion and hemorrhage of prostate (via R31.-).

These codes’ tabular lists mark this diagnosis as mutually exclusive — not reported together unless the conditions are documented as unrelated.

Referenced by 13 Excludes2 notes across 2 chapters: N39 — Other disorders of urinary system (via R31.-), R10 — Abdominal and pelvic pain (via R31.-), R10-R19 — Symptoms and signs involving the digestive system and abdomen (R10-R19) (via R31.-), R11 — Nausea and vomiting (via R31.-), R12 — Heartburn (via R31.-), R13 — Aphagia and dysphagia (via R31.-), R14 — Flatulence and related conditions (via R31.-), R15 — Fecal incontinence (via R31.-), R16 — Hepatomegaly and splenomegaly, not elsewhere classified (via R31.-), R17 — Unspecified jaundice (via R31.-), R18 — Ascites (via R31.-), R19 — Other symptoms and signs involving the digestive system and abdomen (via R31.-), R82 — Other and unspecified abnormal findings in urine (via R31.-).

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

MS-DRG Grouper Relationships (FY2026)

Potential MS-DRG participation — not a DRG assignment.

FY2026 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 4 MS-DRGs: DRG 695 (MDC 11), DRG 696 (MDC 11), DRG 791 (MDC 15), DRG 793 (MDC 15).

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

Clinical classification (AHRQ CCSR):GEN009 — Hematuria (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

Same clinical category (CCSR)

AHRQ's Clinical Classifications Software groups these diagnoses under the same clinical category (Hematuria).

N02.3 — Recurrent and persistent hematuria with diffuse mesangial proliferative glomerulonephritis, N02.4 — Recurrent and persistent hematuria with diffuse endocapillary proliferative glomerulonephritis, N02.5 — Recurrent and persistent hematuria with diffuse mesangiocapillary glomerulonephritis, N02.6 — Recurrent and persistent hematuria with dense deposit disease, N02.7 — Recurrent and persistent hematuria with diffuse crescentic glomerulonephritis, N02.8 — Recurrent and persistent hematuria with other morphologic changes, N02.9 — Recurrent and persistent hematuria with unspecified morphologic changes, N02.A — Recurrent and persistent hematuria with C3 glomerulonephritis, N30.01 — Acute cystitis with hematuria, N30.11 — Interstitial cystitis (chronic) with hematuria, N30.21 — Other chronic cystitis with hematuria, N30.31 — Trigonitis with hematuria, N30.41 — Irradiation cystitis with hematuria, N30.81 — Other cystitis with hematuria, N30.91 — Cystitis, unspecified with hematuria, R31.0 — Gross hematuria, R31.1 — Benign essential microscopic hematuria, R31.2 — Other microscopic hematuria, R31.21 — Asymptomatic microscopic hematuria, R31.9 — Hematuria, unspecified, +3 more

Same Index main term, other category

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

A18.13 — Tuberculosis of other urinary organs (tuberculous), B50.8 — Other severe and complicated Plasmodium falciparum malaria (malarial), B65.0 — Schistosomiasis due to Schistosoma haematobium [urinary schistosomiasis] (endemic), D59.5 — Paroxysmal nocturnal hemoglobinuria [Marchiafava-Micheli] (paroxysmal, nocturnal), N02.0 — Recurrent and persistent hematuria with minor glomerular abnormality (idiopathic, with glomerular lesion, minor abnormality), N02.1 — Recurrent and persistent hematuria with focal and segmental glomerular lesions (idiopathic, with glomerular lesion, focal and segmental hyalinosis or sclerosis), N02.2 — Recurrent and persistent hematuria with diffuse membranous glomerulonephritis (idiopathic, with glomerular lesion, membranous), N02.3 — Recurrent and persistent hematuria with diffuse mesangial proliferative glomerulonephritis (idiopathic, with glomerular lesion, mesangial proliferative), N02.4 — Recurrent and persistent hematuria with diffuse endocapillary proliferative glomerulonephritis (idiopathic, with glomerular lesion, endocapillary proliferative glomerulonephritis), N02.5 — Recurrent and persistent hematuria with diffuse mesangiocapillary glomerulonephritis (idiopathic, with glomerular lesion, mesangiocapillary), N02.6 — Recurrent and persistent hematuria with dense deposit disease (idiopathic, with glomerular lesion, dense deposit disease), N02.7 — Recurrent and persistent hematuria with diffuse crescentic glomerulonephritis (idiopathic, with glomerular lesion, crescenticglomerulonephritis), N02.8 — Recurrent and persistent hematuria with other morphologic changes (idiopathic, with glomerular lesion, proliferative NEC), N02.9 — Recurrent and persistent hematuria with unspecified morphologic changes (idiopathic), N02.A — Recurrent and persistent hematuria with C3 glomerulonephritis (idiopathic, with glomerular lesion, C3, glomerulopathy)

Lab tests where this diagnosis supports Medicare coverage (NCD)

Medicare's National Coverage Determination (NCD) program lists this diagnosis as medical justification for these lab tests.

Partial Thromboplastin Time (PTT) Test, Prothrombin Time Test and INR (PT/INR), Prostate-Specific Antigen (PSA)

Contextual Map

Every relationship of R31.29 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 R31.29 with these 10 related codes in Claim Check

Hierarchy

Referenced by Excludes1 notes

Referenced by Excludes2 notes (13)

Clinical classification (CCSR)

MS-DRG Grouper

MDC crossing

  • MDC 11 — Diseases and Disorders of the Kidney and Urinary Tract[MDC crossing]: “Diseases and Disorders of the Kidney and Urinary Tract — 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. 3,574 same-MDC procedures group here; browse them on the MDC page.”— CMS MS-DRG Definitions Manual · FY2026
  • MDC 15 — Newborns and Other Neonates with Conditions Originating in Perinatal Period[MDC crossing]: “Newborns and Other Neonates with Conditions Originating in Perinatal Period — 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.”— CMS MS-DRG Definitions Manual · FY2026

Index entries

  • Hematuria, microscopic NEC (with symptoms)[Index term]— CMS ICD-10-CM Index to Diseases and Injuries · icd10cm-fy2026

Nearest codes

Change history

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 FY2026 tabular list, index and tables, effective October 1, 2025 Release, file and checksum · Publisher’s page
Claim edits Official source data
CMS Definitions of Medicare Code Edits — v43.1 (April 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 — v43 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

Cite this page

Reference this page in a research guide, syllabus or article. The release is included because code content changes each year.

MedCoder.ai. "R31.29 — Other microscopic hematuria." ICD-10-CM FY2026. https://medcoder.ai/icd10/code/r31.29-other-microscopic-hematuria

Change history

  • FY2017 — October 1, 2016
    Added to the code set
    Other microscopic hematuria
    FY2017 changes

Nearest Codes in This Family

Official ICD-10-CM classifications closest to R31.29 in its code family, with their registry titles.

View all codes in the R31 family