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K50.01 ICD-10-CM Code: Crohn's disease of small intestine with complications

Compare with another code for K50.01Check this code on a claim

Billing Status: NO. This is a non-billable ICD-10-CM code: report a more specific billable code beneath it.

Coding at a Glance

Tabular directives
2 inclusion terms · 4 Excludes1 · 6 use-additional codes

Not billable · FY2027A non-billable heading in the tabular list: report a more specific code beneath it.

What you need to know

Source: CMS/NCHS Official ICD-10-CM tabular notes, quoted. From the CMS/NCHS tabular list for the release in force. A note the category or block publishes applies to this code too, and is marked with where it comes from.

Use additional codefrom K50Report with this code when documented
  • Use additional code to identify any associated fistulas, if applicable:
  • anal fistula (K60.3-)
  • anorectal fistula (K60.5-)
  • rectal fistula (K60.4-)

+2 more in Instructions

Excludes1Not reported with this code unless documented as unrelated
  • Crohn's disease of both small and large intestine (K50.8-) (from K50.0)
  • ulcerative colitis (K51.-) (from K50)
  • irritable bowel syndrome (K58.-) (from K50-K52)
  • megacolon (K59.3-) (from K50-K52)
IncludesWhat this code covers
  • granulomatous enteritis (from K50)
  • noninfective inflammatory bowel disease (from K50-K52)

Where it sits Source: CMS/NCHS

Under:Chapter 11: Diseases of the Digestive SystemK50-K52 Noninfective enteritis and colitisK50 Crohn's disease [regional enteritis]K50.0 Crohn's disease of small intestine

Codes under K50.01 (6)

  • K50.011Crohn's disease of small intestine with rectal bleedingBillable
  • K50.012Crohn's disease of small intestine with intestinal obstructionBillable
  • K50.013Crohn's disease of small intestine with fistulaBillable
  • K50.014Crohn's disease of small intestine with abscessBillable
  • K50.018Crohn's disease of small intestine with other complicationBillable
  • K50.019Crohn's disease of small intestine with unspecified complicationsBillable

Most relevant related codes MedCoder-derived

Read off the official notes above and this code’s own position in the tabular list. Which to report is a documentation question; Compare shows the two side by side.

CompareCheck ClaimView Related Codes

Coding instructions

Official Tabular Instructional Notes: the inclusion, exclusion and sequencing notes published for K50.01 in the official ICD-10-CM tabular list, quoted as published.

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

Trace:FY2027 changesChange historyRelease, file and checksum

Notes without a marker are published on K50.01 itself; “inherited from” names the category or block whose note applies here.

Includes

Conditions the official ICD-10-CM tabular list includes under this code.

  • granulomatous enteritis inherited from K50
  • noninfective inflammatory bowel disease inherited from K50-K52

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).

Use Additional Code

Supplementary codes the tabular list directs you to add.

  • Use additional code to identify any associated fistulas, if applicable:
  • anal fistula (K60.3-)
  • anorectal fistula (K60.5-)
  • rectal fistula (K60.4-)
  • Use additional code to identify manifestations, such as:
  • pyoderma gangrenosum (L88)

Source: inherited from K50

Coder workflow for K50.01

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

Before you code K50.01

  1. K50.01 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).

    ReviewK50.011, K50.012, K50.013, K50.014, K50.018, K50.019

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

  2. K50.01’s title joins a condition with an associated condition or complication. Confirm each component is documented. Where the classification presumes the link through the “with” convention, only a provider statement that the conditions are unrelated defeats it. A combination code is assigned only when it fully identifies the documented conditions; a required second code for the stage, type or manifestation is still reported when the notes ask for it (Guidelines I.B.9, I.A.15).

    Guide: Combination codes →

  3. Check the Excludes1 note: if the documentation supports a condition named there, do not simply proceed with the code beneath K50.01. 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 K50.01?
    Yes → Select that code and continue the checks below on its own page.
    No → K50.01 cannot be reported as written. Where the codes beneath it include an unspecified code, that code applies when the record goes no further; otherwise query for the missing detail.

    ReviewK50.011, K50.012, K50.013, K50.014, K50.018, K50.019

  2. Does the documentation support a condition named in K50.01’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.

    ReviewK50.8, K51, K58, K59.3

Report the code beneath K50.01 that the documentation supports, not K50.01 itself. Then work the Use Additional Code note, and confirm that code is valid for the date of service on its own page.

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 associated condition or complication
Whether the associated condition the title names is documented; the “with” convention presumes some links, and a provider statement that the conditions are unrelated defeats it (Guidelines I.A.15).
The conditions the Use Additional Code note names
Reported with this code when documented; a conditional instruction (“if applicable”, “if known”) applies only when the record supports it.

Official instructions as workflow

  • Excludes1 — check before selecting K50.01(4 notes)

    Coding workflow: If the documentation supports a condition named in this note, do not simply proceed with K50.01: the two are not reported together. The one exception is when the record shows the two conditions are unrelated to each other.

    CompareK50.8, K51, K58, K59.3

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

  • Use Additional Code — after identifying K50.01(6 notes)

    Coding workflow: Check whether the documentation supports the additional code(s) the note names, and report them with K50.01 when it does. Where the instruction is conditional (“if applicable”, “if known”), it applies only when the record documents the condition.

    ReviewK60.3, K60.5, K60.4, L88

    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: Both the condition K50.01 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).

ReviewK50.8, K51, K58, K59.3

Documentation: Only one of the components this code’s title joins is documented.

Coding question: Is the code beneath K50.01 supported?

Path: Review the code for the documented component on its own.

Reason: A combination code is assigned only when it fully identifies the documented conditions; otherwise the documented component takes its own code (Guidelines I.B.9).

Documentation: A condition the Use Additional Code note names is documented.

Coding question: Is a second code reported with the code beneath K50.01?

Path: Review the Use Additional Code note and the code it names.

Reason: The additional code is reported when the record documents the condition; a conditional instruction applies only when its condition is met (Guidelines I.A.13).

ReviewK60.3, K60.5, K60.4, L88

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.

Don’t confuse K50.01 with…

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

The codes most likely to be picked instead of K50.01 — 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.

  • K50.8— Excludes1 conflict (Excludes1 — generally not reported together)

    Not coded here — the tabular list excludes this pair for the same encounter.

    Not reported together with this code, except where the two conditions are documented as unrelated.

    What moves you there: Documentation of Crohn's disease of both small and large intestine moves the case to K50.8; the two are not reported together unless documented as unrelated.

    Full comparison: K50.01 vs K50.8 →

  • K51— Excludes1 conflict (Excludes1 — generally not reported together)

    Not coded here — the tabular list excludes this pair for the same encounter.

    Not reported together with this code, except where the two conditions are documented as unrelated.

    What moves you there: Documentation of ulcerative colitis moves the case to K51; the two are not reported together unless documented as unrelated.

    Full comparison: K50.01 vs K51 →

  • K58— Excludes1 conflict (Excludes1 — generally not reported together)

    Not coded here — the tabular list excludes this pair for the same encounter.

    Not reported together with this code, except where the two conditions are documented as unrelated.

    What moves you there: Documentation of irritable bowel syndrome moves the case to K58; the two are not reported together unless documented as unrelated.

    Full comparison: K50.01 vs K58 →

  • K59.3— Excludes1 conflict (Excludes1 — generally not reported together)

    Not coded here — the tabular list excludes this pair for the same encounter.

    Not reported together with this code, except where the two conditions are documented as unrelated.

    What moves you there: Documentation of megacolon moves the case to K59.3; the two are not reported together unless documented as unrelated.

    Full comparison: K50.01 vs K59.3 →

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.

Coding context

Guidelines, coding notes, decision aids, relationships (with MS-DRG and CCSR classification), hierarchy, HCC, coverage and the context map: what a coder reaches for after the core. Each section names whether it is official source data, a MedCoder-derived relationship or MedCoder editorial.

Code Overview

Crohn's disease of small intestine with complications is a non-billable ICD-10-CM category code (K50.01). 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

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-derived relationships — computed from published CMS and AHRQ datasets

Other codes that name K50.01 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 across 2 chapters: E55.0 — Rickets, active (via K50.-), K51 — Ulcerative colitis (via K50.-).

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

Referenced by 1 Excludes2 note: M04 — Autoinflammatory syndromes (via K50.-).

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

Referenced by 3 Code First instructions: K60.3 — Anal fistula (via K50.-), K60.4 — Rectal fistula (via K50.-), K60.5 — Anorectal fistula (via K50.-).

Each of these codes carries a Code First note naming this condition — when that code is reported, THIS code is sequenced first, ahead of it.

Referenced by 2 Code Also instructions: M07 — Enteropathic arthropathies (via K50.-), M08 — Juvenile arthritis (via K50.-).

These codes suggest coding this condition alongside when both are present.

Contextual Map

Every relationship of K50.01 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 K50.01 with these 8 related codes in Claim Check

Hierarchy

Referenced by Excludes1 notes

  • E55.0 — Rickets, active[Excludes1](via K50.-): “Crohn's rickets (K50.-)”— CMS ICD-10-CM tabular instructional notes · icd10cm-fy2027
  • K51 — Ulcerative colitis[Excludes1](via K50.-): “Crohn's disease [regional enteritis] (K50.-)”— CMS ICD-10-CM tabular instructional notes · icd10cm-fy2027

Referenced by Excludes2 notes

Referenced by Code First instructions

  • K60.3 — Anal fistula[Code First](via K50.-): “Crohn's disease (K50.-)”— CMS ICD-10-CM tabular instructional notes · icd10cm-fy2027
  • K60.4 — Rectal fistula[Code First](via K50.-): “Crohn's disease (K50.-)”— CMS ICD-10-CM tabular instructional notes · icd10cm-fy2027
  • K60.5 — Anorectal fistula[Code First](via K50.-): “Crohn's disease (K50.-)”— CMS ICD-10-CM tabular instructional notes · icd10cm-fy2027

Referenced by Code Also instructions

  • M07 — Enteropathic arthropathies[Code Also](via K50.-): “regional enteritis [Crohn's disease] (K50.-)”— CMS ICD-10-CM tabular instructional notes · icd10cm-fy2027
  • M08 — Juvenile arthritis[Code Also](via K50.-): “regional enteritis [Crohn's disease] (K50.-)”— CMS ICD-10-CM tabular instructional notes · icd10cm-fy2027

Nearest codes (36)

Change history

  • FY2016 — In the code set at ICD-10-CM adoption [Change history]— CMS release files (code change ledger) · icd10cm-fy2016

Reference

Index terms and tables, published questions and FAQ, every source behind this page with its release and checksum, the date-of-service check and the complete change history.

Common coding questions

MedCoder editorial

Can K50.01 be billed directly?

No. K50.01 (Crohn's disease of small intestine with complications) 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 FY2027 tabular list, index and tables, effective October 1, 2026 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
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-derived 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 editorial 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.

Current data releases:ICD-10-CM FY2027 · ICD-10-PCS FY2027 · HCPCS October 2026 · MS-DRG v44 · Medicare Code Editor v44.0 · NCCI PTP Q4 2026 · MUE Q4 2026 · NCD code lists 2026-01 · LCD export September 28, 2026 · All releases and sources

Labels on this page: Official source data · MedCoder-derived relationship · MedCoder editorial explanation. How to read the labels · All data sources and release dates · CMS coding rules

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. "K50.01 — Crohn's disease of small intestine with complications." ICD-10-CM FY2027. https://medcoder.ai/icd10/code/k50.01-crohns-disease-of-small-intestine-with-complications

Change history

  • FY2016 — October 1, 2015
    In the code set at ICD-10-CM adoption
    Crohn's disease of small intestine with complications

No changes since FY2016 — additions, deletions, description changes and billable-status changes are tracked through FY2027, and none are recorded for this code. Note changes are tracked from FY2027 only.

Nearest Codes in This Family

Official ICD-10-CM classifications closest to K50.01 in its code family, with their registry titles.

View all codes in the K50 family