VA Disability Rating for Crohn's Disease: DC 7323 Explained (2026)

How DC 7323 Applies to Crohn's

Diagnostic Code 7323 in 38 CFR 4.114 is titled "ulcerative colitis." Crohn's disease does not have its own listed code in 38 CFR 4.114, so by the rating-by-analogy framework under 38 CFR 4.20, Crohn's disease is rated using the criteria of DC 7323 when the involvement is colonic, and using the small bowel codes (DC 7328 resection of small intestine) when small bowel involvement is dominant. The schedular severity criteria of DC 7323 apply by analogy because the disability of inflammatory bowel disease (chronic diarrhea, abdominal pain, weight loss, fatigue, frequent flare cycles, treatment burden) is comparable between ulcerative colitis and Crohn's.

When Crohn's has produced surgical bowel resection, the residual rating may also be supported under DC 7328 (resection of small intestine) which provides 20/40/60 percent ratings based on whether the resection has produced moderate symptoms, severe symptoms with marked interference of absorption and nutrition, or marked interference with absorption and nutrition with several attacks per year. The rater applies whichever code most accurately captures the predominant disability, and 38 CFR 4.14 prohibits pyramiding overlapping manifestations.

Crohn's Disease: The Underlying Pathology

Crohn's disease is a chronic inflammatory bowel disease characterized by transmural inflammation that can affect any segment of the gastrointestinal tract from mouth to anus, with discontinuous (skip) involvement and a predilection for the terminal ileum and proximal colon. The condition is mediated by dysregulated mucosal immune responses to luminal antigens in genetically susceptible hosts, with environmental modifiers including smoking, diet, and the gut microbiome.

Anatomic Phenotypes

Crohn's is classified by the Montreal classification into three age categories (A1 less than 17, A2 17 to 40, A3 greater than 40), four anatomic locations (L1 terminal ileum, L2 colon, L3 ileocolonic, L4 isolated upper disease), and three behaviors (B1 inflammatory, B2 stricturing, B3 penetrating). Perianal disease (fistulas, abscesses) is added as a modifier "p."

Clinical Features

Common features include chronic diarrhea (often without overt blood, in contrast to ulcerative colitis), abdominal pain (classically right lower quadrant from terminal ileal involvement), weight loss, fatigue, fever in active disease, perianal pain and drainage from fistulas, and extraintestinal manifestations (arthritis, erythema nodosum, pyoderma gangrenosum, uveitis, primary sclerosing cholangitis).

Complications

Crohn's complications drive much of the disability picture: strictures producing partial small bowel obstruction, fistulas (enterocutaneous, enterovesical, enterovaginal, perianal), abscesses, malabsorption with B12 and fat-soluble vitamin deficiencies, short bowel syndrome after multiple resections, colorectal cancer risk from longstanding colonic involvement, and growth retardation in pediatric-onset disease.

Service-Related Considerations

Crohn's disease has a peak incidence in young adulthood (ages 15 to 35), which overlaps with the typical service period. Veterans frequently develop initial symptoms during service that may be misattributed to dietary changes, stress, or infectious gastroenteritis before a definitive diagnosis is established months to years later. The diagnostic delay literature documents median delays of 6 to 12 months from symptom onset to diagnosis, and these delays support service connection arguments when in-service GI symptoms preceded the formal diagnosis.

The Rating Tiers in Detail

DC 7323 provides four severity-based tiers, applied to Crohn's by analogy.

10 Percent (Moderate)

Moderate disease with infrequent exacerbations. This tier captures veterans with well-controlled disease on maintenance therapy, occasional flares not requiring corticosteroid bursts or hospitalization, and stable nutritional status.

30 Percent (Moderately Severe)

Moderately severe disease with frequent exacerbations. This tier captures veterans whose flares require corticosteroid bursts, occasional emergency department visits, and treatment escalation, with the disease impacting normal activities but not producing malnutrition.

60 Percent (Severe)

Severe disease with numerous attacks per year and malnutrition, with health only fair during remissions. The "numerous attacks" and "malnutrition" criteria distinguish this tier. Documented hypoalbuminemia, body mass index below normal range, micronutrient deficiencies, and several hospitalizations per year support this tier.

100 Percent (Pronounced)

Pronounced disease resulting in marked malnutrition, anemia, and general debility, or with serious complication such as liver abscess. This tier captures veterans with severe refractory disease requiring intensive treatment (multiple biologic agents, parenteral nutrition, repeated surgical intervention) and substantial systemic decline.

Resection Rating Under DC 7328

When Crohn's has required small bowel resection, DC 7328 provides parallel ratings: 20 percent (mild symptoms), 40 percent (moderately severe, with definite interference with absorption and nutrition), and 60 percent (severe, with marked interference with absorption and nutrition, manifested by severe impairment of health objectively supported by examination findings).

Ostomy Ratings

Veterans with permanent ileostomy or colostomy from Crohn's may also be rated under DC 7329 (ileostomy) or DC 7332 (rectum and anus, impairment of sphincter control), depending on the operative history.

Special Monthly Compensation Considerations

For veterans with permanent ostomy creating a need for special aid or for veterans with disease that has progressed to the point of substantial functional dependency, the SMC framework under 38 USC 1114 may provide additional entitlements.

Service Connection Pathways

Several pathways are available for Crohn's claims.

Direct Service Connection

When service treatment records document chronic GI symptoms (diarrhea, abdominal pain, weight loss) during service, and the post-service course leads to a definitive Crohn's diagnosis, direct service connection is the most straightforward pathway. The medical opinion bridges the in-service symptom pattern to the eventual diagnosis using the diagnostic-delay literature.

Gulf War Presumptive

38 CFR 3.317 provides for presumptive service connection of medically unexplained chronic multisymptom illness for qualifying Gulf War veterans. Functional gastrointestinal disorders are explicitly included; IBD itself is not classically a presumptive condition, but some Gulf War-era cohorts have shown elevated IBD prevalence, and the multisymptom presentation can fit the presumptive framework in some cases. The presumptive theory does not require a nexus opinion.

Secondary Service Connection

Under 38 CFR 3.310, Crohn's can be secondary to:

• Service-connected stress disorders (PTSD, anxiety) through HPA-axis effects on intestinal permeability and the gut-brain axis (an emerging mechanistic basis)
• Aggravation by service-connected GI conditions producing chronic gut dysfunction
• Medication-induced exacerbation from drugs used to treat service-connected conditions (NSAIDs have been associated with IBD flares)

Aggravation Theory

When Crohn's predated service or arose from another cause but was aggravated by service-related stress or by a service-connected condition, 38 CFR 3.310(b) requires the opinion to identify baseline severity and current severity after aggravation.

Evidence That Supports the Rating

The records most useful for a defensible Crohn's rating include the following.

Gastroenterology Evaluation

Specialist evaluation establishing the diagnosis with the Montreal classification, the involved bowel segments, the disease behavior (inflammatory, stricturing, penetrating), and the treatment plan.

Endoscopy and Histology

Colonoscopy or ileocolonoscopy reports describing skip lesions, cobblestoning, aphthous and linear ulcers, and any strictures or fistulas. Biopsy histopathology documenting transmural inflammation, non-caseating granulomas, and crypt distortion is the gold-standard diagnostic confirmation.

Imaging

CT enterography or MR enterography identifying bowel wall thickening, mural enhancement, mesenteric stranding, strictures, fistulas, abscesses, and the comb sign of vasa recta engorgement.

Laboratory Data

CRP trajectory (an inflammatory marker that rises with active disease), fecal calprotectin (a sensitive intestinal inflammation marker), CBC for anemia, comprehensive metabolic panel for liver enzymes and albumin (nutritional marker), iron studies, vitamin B12 (terminal ileal absorption), vitamin D, and any antibody studies (ASCA frequently positive in Crohn's).

Flare Diary

Patient-maintained documentation of flare frequency, duration, severity (stool frequency, blood, abdominal pain intensity), and triggers over at least three months. This is among the most useful evidence for the schedular tier determination.

Weight and Nutritional Trajectory

Serial weights, body mass index, percent unintentional weight loss, albumin level, and any documented micronutrient deficiencies.

Treatment History

Comprehensive medication history including 5-ASA agents (mesalamine), corticosteroids (oral and topical), immunomodulators (azathioprine, 6-MP, methotrexate), biologics (anti-TNF agents infliximab, adalimumab, certolizumab; anti-integrin agents vedolizumab, natalizumab; anti-IL-12/23 ustekinumab; anti-IL-23 risankizumab, mirikizumab; JAK inhibitors upadacitinib, tofacitinib), and any documented failure or loss of response to specific agents.

Surgical History

Operative reports from any bowel resection, strictureplasty, fistula repair, abscess drainage, perianal procedures, or ostomy creation.

Secondary Conditions From Crohn's

Veterans service-connected for Crohn's frequently have rateable secondary conditions. The medical opinion should identify these for separate rating.

Extraintestinal Manifestations

• Enteropathic arthritis (peripheral or axial)
• Episcleritis, scleritis, uveitis (rated under eye codes)
• Erythema nodosum and pyoderma gangrenosum (rated under skin codes)
• Primary sclerosing cholangitis (rated under hepatobiliary codes)

Nutritional Complications

Anemia, osteoporosis, vitamin deficiencies, and short bowel syndrome can each support separate or related ratings.

Mental Health

Depression and anxiety related to chronic illness, work disruption, and social-functional impact of frequent diarrhea and ostomy management can support a secondary mental health rating under 38 CFR 3.310.

Common Pitfalls

Several recurring issues weaken Crohn's claims.

Snapshot-Only Examinations

An examination during remission can produce a normal-appearing assessment despite severe cyclical disease. The schedular tier should be based on the prior period's pattern, not the exam-day status. The flare diary and treatment escalation history are the bridge.

Missing Nutritional Documentation

The 60 percent and 100 percent tiers require malnutrition documentation. Serial weights, albumin levels, BMI trajectory, and any documented micronutrient deficiencies should be in the record.

Missing Surgical History

Bowel resection or ostomy can support distinct ratings under DC 7328 or DC 7329. Records that focus on the active inflammatory disease without addressing surgical residuals understate the disability.

Failure to Address Extraintestinal Manifestations

Enteropathic arthritis, cutaneous manifestations, and ocular involvement are frequently overlooked. The medical opinion should systematically identify and recommend separate ratings.

Conflating Crohn's With IBS

Irritable bowel syndrome is functional and is rated under DC 7319 (10 percent maximum without bowel obstruction). Crohn's is inflammatory and is rated under DC 7323 with up to 100 percent. Misclassification can substantially understate the rating.