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R35.8 ICD-10-CM Code: Other polyuria

Billing Status: NO. This is a clinician non-billable / parent hierarchy grouping in the ICD-10-CM system.

Coding at a Glance

Tabular directives
1 Excludes1 · 2 code-first instructions

Coding instructions

Official Tabular Instructional Notes: the inclusion, exclusion and sequencing notes published for R35.8 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 R35.8 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 R35

Code First

Underlying conditions that must be sequenced before this code.

  • Code first, if applicable, any causal condition, such as:
  • enlarged prostate (N40.1)

Source: inherited from R35

Coder workflow for R35.8

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

Before you code R35.8

  1. R35.8 is not reportable as written. Select the more specific code beneath it that the documentation supports. Codes are reported to the highest level of specificity the classification provides (Guidelines I.B.2).

    ReviewR35.81, R35.89

    See the relationships section · Guide: How to choose an ICD-10-CM code →

  2. 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 →

  3. “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 R35.8; 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).

    ReviewR35.0, R35.1

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

  4. Check the Excludes1 note: if the documentation supports a condition named there, do not simply proceed with R35.8. 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 one of the more specific codes beneath R35.8?
    Yes → Select that code and continue the checks below on its own page.
    No → R35.8 cannot be reported as written; query for the specificity its subcategory needs.

    ReviewR35.81, R35.89

  2. 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.
  3. Does the documentation support a condition named in R35.8’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.

    ReviewF45.8

  4. Is the underlying (etiologic) condition the Code First note names documented?
    Yes → Sequence the underlying condition first, then R35.8.
    No → Continue; do not add an underlying condition the record does not document.

    ReviewN40.1

Consider R35.8. 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 underlying (etiologic) condition
Named in the Code First note; sequenced before this code when documented (Guidelines I.A.13).
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 R35.8(1 note)

    Coding workflow: If the documentation supports a condition named in this note, do not simply proceed with R35.8: the two are not reported together. The one exception is when the record shows the two conditions are unrelated to each other.

    CompareF45.8

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

  • Code First — sequencing check(2 notes)

    Coding workflow: Check whether the underlying or etiologic condition the note names is documented. When it is, sequence it before R35.8. Do not add an underlying condition the record does not document.

    ReviewN40.1

    See the official tabular notes · Guidelines I.A.13

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 R35.8 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 R35.8 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).

ReviewF45.8

Documentation: The underlying condition the Code First note names is documented alongside this condition.

Coding question: How are the two sequenced?

Path: Review the Code First note.

Reason: The underlying condition is sequenced first and the manifestation follows (Guidelines I.A.13).

ReviewN40.1

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 polyuria is a non-billable ICD-10-CM category code (R35.8). A more specific billable subcode must be selected for claims submission.

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

Verify Before Coding

  • Not billable as written — a more specific code is required: R35.81, R35.89.

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 R35.8 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 11 Excludes2 notes: R10 — Abdominal and pelvic pain (via R35.-), R10-R19 — Symptoms and signs involving the digestive system and abdomen (R10-R19) (via R35.-), R11 — Nausea and vomiting (via R35.-), R12 — Heartburn (via R35.-), R13 — Aphagia and dysphagia (via R35.-), R14 — Flatulence and related conditions (via R35.-), R15 — Fecal incontinence (via R35.-), R16 — Hepatomegaly and splenomegaly, not elsewhere classified (via R35.-), R17 — Unspecified jaundice (via R35.-), R18 — Ascites (via R35.-), R19 — Other symptoms and signs involving the digestive system and abdomen (via R35.-).

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

Clinical classification (AHRQ CCSR):SYM011 — Genitourinary signs and symptoms (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 (Genitourinary signs and symptoms).

N39.9 — Disorder of urinary system, unspecified, R30.0 — Dysuria, R30.1 — Vesical tenesmus, R30.9 — Painful micturition, unspecified, R33.0 — Drug induced retention of urine, R33.8 — Other retention of urine, R33.9 — Retention of urine, unspecified, R34 — Anuria and oliguria, R35.0 — Frequency of micturition, R35.1 — Nocturia, R35.81 — Nocturnal polyuria, R35.89 — Other polyuria, R36.0 — Urethral discharge without blood, R36.1 — Hematospermia, R36.9 — Urethral discharge, unspecified, R39.0 — Extravasation of urine, R39.11 — Hesitancy of micturition, R39.12 — Poor urinary stream, R39.13 — Splitting of urinary stream, R39.14 — Feeling of incomplete bladder emptying, +38 more

Contextual Map

Every relationship of R35.8 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 R35.8 with these 8 related codes in Claim Check

Hierarchy

Referenced by Excludes2 notes (11)

Clinical classification (CCSR)

Nearest codes

Change history (2)

Common coding questions

Can R35.8 be billed directly?

No. R35.8 (Other polyuria) is a non-billable ICD-10-CM category code. A more specific billable subcode must be selected based on clinical documentation.

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
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. "R35.8 — Other polyuria." ICD-10-CM FY2026. https://medcoder.ai/icd10/code/r35.8-other-polyuria

Change history

  • FY2022 — October 1, 2021
    Became a non-billable header
    FY2022 changes
  • FY2016 — October 1, 2015
    In the code set at ICD-10-CM adoption
    Other polyuria

Nearest Codes in This Family

Official ICD-10-CM classifications closest to R35.8 in its code family, with their registry titles.

View all codes in the R35 family