What is ICD-10 code K50.812?

K50.812 is the ICD-10-CM diagnosis code for Crohn's disease of both small and large intestine with intestinal obstruction. Crohn's disease affecting both the small and large intestines with a blockage preventing normal passage of intestinal contents. K50.812 is a billable code, meaning it can be reported on a claim as a primary or secondary diagnosis when supported by documentation. K50.812 is part of the FY2026 ICD-10-CM code set published by the CMS National Center for Health Statistics and used on Medicare, Medicaid, and commercial claims in the United States.

Yes. K50.812 is a billable ICD-10-CM code that can be reported on professional and institutional claims as a primary or secondary diagnosis when the provider documentation supports the specific condition described. Billable codes in ICD-10-CM are coded to the highest level of specificity available for the documented diagnosis. K50.812 is current for fiscal year 2026 and remains in the active CMS ICD-10-CM code set published by the National Center for Health Statistics.

Which HCC does K50.812 map to under V28?

K50.812 maps to CMS-HCC V28 HCC 78 (Intestinal Obstruction/Perforation) and HCC 80 (Crohn's Disease (Regional Enteritis)). The category numbers, labels, and conditions come from the CMS-HCC V28 model file for payment year 2026.

2026 ICD-10-CM K50.812: Crohn's disease

K50.812 maps to CMS-HCC V28 HCCs 78 and 80. Source-labeled RAF references are available. Documentation must support MEAT. MEAT criteria · RAF Calculator · free HCC coding tools

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Code lookupK50.812Effective periodFY2026 Apr Update (Apr 1-Sep 30)

FY 2026 Apr update / Diseases of the digestive system (K00-K95) / Noninfective enteritis and colitis (K50-K52)

K50.812

Billable / SpecificICD-10-CMOfficial ICD-10-CMCodebook guidance

Crohn's disease of both small and large intestine with intestinal obstruction

Crohn's disease affecting both the small and large intestines with a blockage preventing normal passage of intestinal contents.

Buddy Insight

Crohn's disease of both small and large intestine with intestinal obstruction indicates stricturing disease in ileocolonic Crohn's causing bowel blockage.

CMS-HCC V28

Mapped

HCC 78

Intestinal Obstruction/Perfor...

Code-level coefficient reference

+ HCC 80

CMS-HCC V24

Historical

Not used for standard CY2026 Medicare Advantage payment. Select a historical period to review V24.

Not used for CY2026 payment

ACA/HHS

Mapped

HCC 045

HHS-HCC 045 adult, RAF varies...

Code-level coefficient reference

+ HCC 048

ESRD/PACE

Mapped

HCC 33

Intestinal Obstruction/Perfor...

Code-level coefficient reference

+ HCC 35

RXHCC

Mapped

HCC 67

Inflammatory Bowel Disease

Code-level coefficient reference

Code Book Path

Official

K50.8Crohn's disease of both small and large intestine

K50.81Crohn's disease of both small and large intestine with complications

K50.812Crohn's disease of both small and large intestine with intestinal obstruction

Inclusion Terms

Official

ICD-10-CM does not list inclusion terms for K50.812 in this effective period.

Excludes 2

Official

ICD-10-CM does not list Excludes 2 notes for K50.812 in this effective period.

Related Child Codes

Official

K50.811Crohn's disease of both small and large intestine with rectal bleeding

K50.813Crohn's disease of both small and large intestine with fistula

K50.814Crohn's disease of both small and large intestine with abscess

K50.818Crohn's disease of both small and large intestine with other complication

K50.819Crohn's disease of both small and large intestine with unspecified complications

Includes

Official

ICD-10-CM does not list Includes notes for K50.812 in this effective period.

Excludes 1

Official

ICD-10-CM does not list Excludes 1 notes for K50.812 in this effective period.

Code First

Official

ICD-10-CM does not list Code First sequencing instructions for K50.812 in this effective period.

Use Additional

Official

ICD-10-CM does not list Use Additional Code instructions for K50.812 in this effective period.

Code Also

Official

ICD-10-CM does not list Code Also instructions for K50.812 in this effective period.

Buddy Documentation Tip

HCC Buddy guidance

Provider documentation of Crohn's disease involving both small and large intestine with intestinal obstruction

Imaging confirmation of obstruction and its location

Documentation of both small and large intestine disease involvement

Partial vs. complete obstruction specification

MEAT Support

HCC Buddy guidance

Provider documentation of Crohn's disease involving both small and large intestine with intestinal obstruction

Imaging confirmation of obstruction and its location

Documentation of both small and large intestine disease involvement

Partial vs. complete obstruction specification

Audit Caution

HCC Buddy guidance

Coding obstruction separately instead of using the Crohn's-specific combination code

Missing that this code has NO HCC mapping in V24 or V28 — like all Crohn's with obstruction codes

Using only one anatomic site when both are documented

Not distinguishing Crohn's-related obstruction from adhesive obstruction in post-surgical patients

Common Mistakes

HCC Buddy guidance

K50.80 — Crohn's disease of both sites without complications: no obstruction present

K50.012 — Crohn's disease of small intestine with intestinal obstruction: small intestine only

K50.112 — Crohn's disease of large intestine with intestinal obstruction: large intestine only

K50.912 — Crohn's disease, unspecified, with intestinal obstruction: site not documented

Current with CMS: FY2026 ICD-10-CM Apr 1 update (effective Apr 1 – Sep 30, 2026) · CMS-HCC V28, 100% phased in for payment year 2026. FY2027 code set already staged for October 1, 2026. How HCC Buddy stays current →

Is K50.812 an HCC code?

Yes. K50.812 (Crohn's disease of both small and large intestine with intestinal obstruction) maps to HCC 78, Intestinal Obstruction/Perforation and HCC 80, Crohn's Disease (Regional Enteritis) under the CMS-HCC V28 risk adjustment model, with source-labeled community non-dual aged reference coefficients HCC 78 0.326 and HCC 80 0.550. Source-labeled code-level coefficients are references, not member totals. Actual contribution depends on complete member context, hierarchy and cleanup rules, interactions, and model year. HCC Buddy's RAF Calculator supports CMS-HCC V28 PY2026 and shows no score unless every required source and calculation check passes. It is billable for payment year 2026.

Coder answer: K50.812 is billable and maps to V28 HCC 78, Intestinal Obstruction/Perforation and HCC 80, Crohn's Disease (Regional Enteritis). Open it in the Code Book for the tabular path, RAF, and MEAT checklist.

Code: K50.812
Description: Crohn's disease of both small and large intestine with intestinal obstruction
HCC (V28): HCC 78 — Intestinal Obstruction/Perforation; HCC 80 — Crohn's Disease (Regional Enteritis)
RAF reference coefficient: HCC 78: 0.326; HCC 80: 0.550
Billable: Yes
Payment year: 2026

HCC Category Mapping

V28HCC 78, Intestinal Obstruction/Perforation

0.326

+ HCC 80, Crohn's Disease (Regional Enteritis)0.550

ESRDHCC 33, Intestinal Obstruction/Perforation

Not separately weighted

+ HCC 35, Inflammatory Bowel DiseaseNot separately weighted

RxHCCHCC 67, Inflammatory Bowel Disease

Not separately weighted

These are source-labeled model coefficients, not member totals. A category may still be removed by hierarchy or model cleanup rules. Weights are not directly comparable across models: CMS-HCC V28 and V24 use Community, Non-Dual, Aged; ESRD uses the dialysis continuing-enrollee model; RxHCC is the Part D continuing-enrollee, non-low-income, aged weight (a larger scale than CMS-HCC). ACA/HHS has no single weight — it varies by metal level. Actual per-patient RAF contribution depends on member context, hierarchy and cleanup rules, interactions, and the model year used by the payer. V28 is the CMS-HCC model phased in over payment years 2024–2026; V24 remains available for historical review.

Work K50.812 in the Code Book — tabular path, V28 RAF reference, and MEAT checklist →

MEAT Criteria for K50.812

For K50.812 to count as a valid HCC diagnosis in a given encounter, the provider's documentation must show MEAT: Monitor, Evaluate, Assess, or Treat. A diagnosis from a prior year does not carry forward automatically, it has to be re-documented and supported each calendar year.

MMonitor: signs, symptoms, disease progression, or lab trending documented in the note
EEvaluate: test results, medication response, or physical findings reviewed by the provider
AAssess: explicit mention in the assessment or plan with acknowledgment of status
TTreat: medication, referral, procedure, therapy, or counseling tied to the diagnosis

Only one of M/E/A/T is required to support the code, but the documentation must be specific enough to show that the provider actually addressed K50.812 during that encounter, not just copy-forwarded from a problem list.

Coder workflow notes

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What This Code Means

K50.812 is the ICD-10-CM diagnosis code for crohn's disease of both small and large intestine with intestinal obstruction. Crohn's disease affecting both the small and large intestines with a blockage preventing normal passage of intestinal contents. K50.812 sits in the ICD-10-CM chapter for diseases of the digestive system (k00-k95), within the section covering noninfective enteritis and colitis (k50-k52).

Under the CMS-HCC V28 risk adjustment model, K50.812 maps to Intestinal Obstruction/Perforation (HCC 78) with a source-labeled community, non-dual, aged reference coefficient of 0.326. No V24 mapping is shown for K50.812; use the applicable model and payment year when reviewing the V28 mapping. V28 is the CMS-HCC risk adjustment model that reached 100% phase-in for payment year 2026, replacing V24 which was used during the PY2024–PY2025 transition. Source-labeled code-level coefficients are references, not member totals. Actual contribution depends on complete member context, hierarchy and cleanup rules, interactions, and model year. HCC Buddy's RAF Calculator supports CMS-HCC V28 PY2026 and shows no score unless every required source and calculation check passes.

Ensure documentation specifies both small and large intestine involvement and confirms obstruction. Because K50.812 maps to an HCC category, the provider's documentation must satisfy MEAT criteria (Monitor, Evaluate, Assess, or Treat) before the diagnosis is used for risk adjustment. When documentation is ambiguous, coders should issue a provider query rather than assume the highest-specificity variant.

HCC Buddy maintains structured V28 and V24 mapping, source-labeled coefficient references, and MEAT documentation criteria for K50.812 sourced directly from the CMS-HCC risk adjustment model files and the CMS ICD-10-CM code set.

Coding Tips

•Ensure documentation specifies both small and large intestine involvement and confirms obstruction
•Obstruction may be partial or complete; document severity if available

Clinical Significance

Crohn's disease of both small and large intestine with intestinal obstruction indicates stricturing disease in ileocolonic Crohn's causing bowel blockage. The obstruction may occur at the terminal ileum (most common) or the colon, and the extensive disease involvement increases surgical complexity. This complication often requires hospitalization and may necessitate ileocolonic resection.

Documentation Requirements

✓Provider documentation of Crohn's disease involving both small and large intestine with intestinal obstruction
✓Imaging confirmation of obstruction and its location
✓Documentation of both small and large intestine disease involvement
✓Partial vs. complete obstruction specification
✓Treatment approach (bowel rest, nasogastric decompression, surgical intervention)

Commonly Confused Codes

•K50.80: Crohn's disease of both sites without complications: no obstruction present
•K50.012: Crohn's disease of small intestine with intestinal obstruction: small intestine only
•K50.112: Crohn's disease of large intestine with intestinal obstruction: large intestine only
•K50.912: Crohn's disease, unspecified, with intestinal obstruction: site not documented
•K56.60: Unspecified intestinal obstruction: not attributed to Crohn's disease