Constipation was a standalone nursing diagnosis for decades, but that changed recently. In the 2024-2026 edition of the NANDA-I taxonomy (the standard classification system for nursing diagnoses), constipation was retired as its own diagnosis. NANDA-I determined that constipation is a symptom rather than a diagnostic judgment, so it’s now incorporated as a defining characteristic within a broader diagnosis called “impaired intestinal elimination.” If you’re a nursing student or practicing nurse, this shift matters for how you document care plans going forward.
Why Constipation Was Retired as a Diagnosis
NANDA International retired 46 diagnoses in its latest edition, and constipation was among them. The reasoning: constipation and diarrhea are symptoms a patient experiences, not clinical judgments a nurse makes. A nursing diagnosis is supposed to capture the nurse’s interpretation of a pattern, not just restate what the patient reports. Under the updated framework, constipation appears as a defining characteristic (a sign or symptom that supports a diagnosis) under the new diagnosis “impaired intestinal elimination” (code 00344).
This distinction can feel abstract, but it has practical consequences. When you write a care plan, you no longer label the problem as “constipation.” Instead, you identify impaired intestinal elimination as the diagnosis and list constipation, along with any other bowel-related symptoms, as the evidence supporting that diagnosis.
How Constipation Is Identified in Practice
Even though the label has changed in nursing taxonomy, the clinical criteria for recognizing constipation haven’t. The Rome IV criteria, used across healthcare disciplines, define functional constipation as having two or more of the following over a six-month period:
- Fewer than 3 spontaneous bowel movements per week
- Straining during more than 25% of bowel movements
- Hard or lumpy stools at least 25% of the time
- A feeling of incomplete emptying at least 25% of the time
- A sensation of blockage at least 25% of the time
- Needing manual assistance to pass stool at least 25% of the time
The patient must also rarely have loose stools without laxatives and not meet the criteria for irritable bowel syndrome. For children under 4, the threshold is lower: at least two symptoms for one month. For children over 4, symptoms need to persist for at least two months. Pediatric signs include fecal incontinence, stool withholding behavior, and large stool masses found on examination.
Assessment Tools Nurses Use
The Bristol Stool Form Scale is the most common bedside tool for evaluating stool consistency. It’s a seven-point visual scale ranging from type 1 (hard, separate lumps) to type 7 (entirely liquid). Types 1 and 2 are considered abnormally hard and, combined with other symptoms, point toward constipation. Nurses document the stool type alongside frequency, the patient’s typical bowel habits, and any laxative use.
A thorough bowel assessment also includes palpating the abdomen for masses, listening for bowel sounds, and reviewing the patient’s medication list. Several common drug categories slow gut motility: opioids, calcium-channel blood pressure medications, certain antidepressants, iron supplements, anti-seizure medications, and drugs used for Parkinson’s disease. Identifying a medication cause changes the entire care plan, since the fix may involve adjusting the prescription rather than adding laxatives.
Writing the Care Plan
Under older NANDA-I editions, a care plan statement for constipation followed the PES format: Problem, Etiology, Signs and Symptoms. A typical entry might read: “Constipation related to opioid use as evidenced by no bowel movement in 4 days and hard, lumpy stool (Bristol type 1).” With the updated taxonomy, the problem label shifts to “impaired intestinal elimination,” but the structure stays the same. The etiology (what’s causing it) and the evidence (what you’re observing) still need to be specific and individualized.
Common related factors to document include low fluid intake, reduced physical activity, medication side effects, changes in routine (hospitalization, travel), and inadequate dietary fiber. It’s worth noting that research has found no significant difference in fiber intake between constipated and non-constipated people in general populations, so fiber is more useful as an intervention than as a root cause explanation.
Nursing Interventions for Constipation
Clinical practice guidelines recommend starting with non-drug approaches. These include increasing fluid intake, encouraging physical activity (even walking laps in a hospital hallway counts), establishing a regular toileting schedule, and adding dietary fiber and probiotic foods. For patients in long-term care, regular prompting to use the bathroom is especially important, since immobility and lack of routine are major contributors.
When non-drug strategies aren’t enough, the typical medication approach follows a stepwise pattern. Stool softeners come first, followed by mild stimulant laxatives if needed. Stronger laxatives, suppositories, or enemas are reserved for when oral options fail. In severe cases involving large, hardened stool masses, mineral oil enemas or manual removal may be necessary. Guidelines from the American Gastroenterological Association caution against routine use of stimulant laxatives, though in practice, nurses in long-term care facilities administer them regularly.
Measuring Patient Outcomes
The goal of any constipation-related care plan is measurable improvement. Outcome indicators typically include the frequency of bowel movements (aiming for at least 3 per week), stool consistency moving toward types 3 through 5 on the Bristol scale, the patient reporting less straining, and the absence of abdominal distension or discomfort. Reassessment should happen at consistent intervals, and the care plan should be updated when interventions aren’t producing results.
One often-overlooked outcome is patient perception. Some people believe they’re constipated when their stool transit is actually normal, a pattern sometimes called perceived constipation. These patients may overuse laxatives based on an expectation that they should have daily bowel movements. Education about what’s normal (anywhere from 3 times a day to 3 times a week) can be just as important as any physical intervention.
What This Means for Nursing Students
If you’re working from an older textbook, you’ll likely still see “constipation” listed as a NANDA-I diagnosis. It’s not wrong to understand it in that framework, since the clinical reasoning is identical. But for current coursework and exams referencing the 2024-2026 taxonomy, the correct terminology is “impaired intestinal elimination,” with constipation serving as a defining characteristic rather than the diagnosis itself. The underlying assessment, interventions, and outcome evaluation remain the same. The change is about classification precision, not about how you care for the patient.