A medical diagnosis names the disease or injury a client has, such as pneumonia, and guides medical treatment. A nursing diagnosis names how the client is responding to that disease or to a life process, such as Ineffective Airway Clearance, and guides the care nurses plan and carry out on their own. One client usually has one or two medical diagnoses and several nursing diagnoses. The medical diagnosis stays the same until the disease resolves; the nursing diagnoses change as the client’s responses change, sometimes from one shift to the next.
At a glance
- Medical diagnosis
- Identifies a disease, injury, or disorder (pathology). Classified with ICD-10-CM codes. Example: community-acquired pneumonia.
- Nursing diagnosis
- A clinical judgment about a person’s, family’s, group’s, or community’s response to health problems or life processes. Uses NANDA-I labels. Example: Impaired Gas Exchange.
- Who makes each
- Medical diagnoses are made by physicians and, within their state scope of practice, nurse practitioners and physician assistants. Nursing diagnoses are made by registered nurses as the second step of the nursing process.
- What each guides
- A medical diagnosis guides tests, medicines, and procedures the provider orders. A nursing diagnosis guides outcomes and interventions the nurse is accountable for.
- Common mistake
- Putting a medical term in a nursing diagnosis label, such as “Pneumonia” or “Hypoxemia.” A disease can appear as an associated condition, but the label must be a NANDA-I nursing diagnosis.
How each kind of diagnosis works
Both diagnoses start with assessment data, but they ask different questions. The provider asks, “What disease is causing this?” and uses the history, physical exam, labs, and imaging to name it. The nurse asks, “How is this person responding, and what can nursing do about it?” and uses the same data, plus how the client is breathing, eating, moving, sleeping, coping, and learning, to name the problems nursing can treat.
The nursing diagnosis is step two of the nursing process (ADPIE): Assessment, Diagnosis, Planning, Implementation, and Evaluation. It is what turns a pile of assessment findings into a care plan. NANDA International (NANDA-I) keeps the official list of nursing diagnosis labels, each with a definition, defining characteristics, and related or risk factors. The current edition is the 2024–2026 classification.
NANDA-I also separates related factors, which nurses can change on their own (such as retained secretions or low knowledge of fluid needs), from associated conditions, which are medical diagnoses, injuries, or treatments that nurses cannot change on their own (such as pneumonia). That is where the medical diagnosis fits inside a nursing diagnosis statement.
Side-by-side comparison
| Feature | Medical diagnosis | Nursing diagnosis |
|---|---|---|
| Focus | The disease, injury, or disorder | The client’s response to the illness or life process |
| Made by | Physician, nurse practitioner, or physician assistant, per state law | Registered nurse |
| Classification | ICD-10-CM | NANDA-I |
| How long it lasts | Usually unchanged until the disease resolves or is revised | Changes as the client’s responses change; may resolve in hours or days |
| How many per client | Often one or a few | Often several, ranked by priority |
| Guides | Medical treatment: tests, medicines, surgery | Nursing care: outcomes and independent nursing interventions |
| Example (same client) | Community-acquired pneumonia | Ineffective Airway Clearance; Impaired Gas Exchange |
| Example (same client) | Type 2 diabetes | Risk for Unstable Blood Glucose Level |
| Example (same client) | Fractured hip | Acute Pain; Impaired Physical Mobility |
Collaborative problems: the third category
Some problems need both nursing and medical treatment, and the nurse’s main job is to watch for them and report early. These are often written as collaborative problems or potential complications, such as “Potential complication: sepsis.” They are not NANDA-I nursing diagnoses. The nurse monitors and acts on the provider’s orders and protocols, while the provider prescribes the definitive treatment.
Using assessment data for both
The same findings feed both diagnoses. What changes is the question asked of them. Here is the assessment for the client used in the care plans below, a 68-year-old woman admitted with pneumonia.
Subjective data
- “I can’t get a full breath, and every time I cough it hurts on my right side.”
- Cough for four days, now bringing up thick yellow sputum
- “I get winded just walking to the bathroom.” Too tired to shower
- “I haven’t felt like eating or drinking since Sunday.”
- Lives with her husband; independent at home before this illness
Objective data
- Temperature 38.6°C (101.5°F), heart rate 108, respiratory rate 26, blood pressure 118/70
- Oxygen saturation 89% on room air, 93% on 2 L/min oxygen by nasal cannula as ordered
- Crackles over the right lower lobe; weak, ineffective cough
- Chest x-ray: right lower lobe consolidation. White blood cell count elevated at 15,200/mm³
- Dry mucous membranes, dark concentrated urine, about one glass of fluid taken in the past 12 hours
- Heart rate rises to 124 and oxygen saturation drops to 88% on oxygen after walking 10 feet
Nursing diagnoses vs medical diagnoses: examples
- Pneumonia (medical) → Ineffective Airway Clearance, Impaired Gas Exchange (nursing)
- Heart failure (medical) → Excess Fluid Volume, Decreased Activity Tolerance (nursing)
- Hip fracture (medical) → Acute Pain, Impaired Physical Mobility, Risk for Adult Falls (nursing)
- Gastroenteritis (medical) → Deficient Fluid Volume, Diarrhea (nursing)
- New type 2 diabetes (medical) → Risk for Unstable Blood Glucose Level, Deficient Knowledge (nursing)
- Major depressive disorder (medical) → Hopelessness, Self-Neglect (nursing)
Worked care plans
Four plans in the same ADPIE shape, all for the client above. The scenario is a 68-year-old woman admitted with a medical diagnosis of community-acquired pneumonia of the right lower lobe. She has had a cough for four days, now with thick yellow sputum, and right-sided chest pain when she coughs. Temperature is 38.6°C (101.5°F), heart rate 108, respiratory rate 26, blood pressure 118/70, and oxygen saturation 89% on room air, 93% on 2 L/min by nasal cannula. She has crackles in the right lower lobe and a weak cough, gets short of breath walking to the bathroom, and has barely eaten or drunk for two days. The provider has ordered IV antibiotics, IV fluids, oxygen, and activity as tolerated. Notice that “pneumonia” never appears as a nursing diagnosis label.
1. Ineffective Airway Clearance
Problem-focusedSubjective: “It feels like it’s stuck in my chest, and coughing hurts too much to really do it.”
Objective: Crackles over the right lower lobe. Weak cough producing small amounts of thick yellow sputum. Respiratory rate 26. Splints her right side when she coughs.
Ineffective Airway Clearance related to thick, retained secretions and a weak cough from pain, associated with pneumonia, as evidenced by crackles, ineffective cough, thick sputum, and a respiratory rate of 26.
- Client coughs effectively and brings up secretions within 24 hours
- Client shows splinted coughing and deep breathing correctly by the end of the shift
- Breath sounds improve, with fewer crackles, before discharge
- Assess breath sounds, cough, and sputum color, amount, and thickness every shift and as needed
- Raise the head of the bed and help her sit upright in a chair when able
- Teach splinted coughing with a pillow against the right chest, and deep breathing; use incentive spirometry as ordered
- Give pain medicine as ordered before coughing exercises so she can cough deeply
- Encourage oral fluids unless restricted, and give IV fluids as ordered, to help thin secretions
- Suction only if she cannot clear secretions on her own
- Collect a sputum culture before the first antibiotic dose if ordered
By day 2 she was coughing up sputum with a pillow splint, using the incentive spirometer each hour while awake, and crackles were fewer. Goal partly met; continue plan.
2. Impaired Gas Exchange
Problem-focusedSubjective: “I can’t get a full breath.”
Objective: Oxygen saturation 89% on room air, 93% on 2 L/min by nasal cannula. Respiratory rate 26, heart rate 108. Restless. Chest x-ray shows right lower lobe consolidation.
Impaired Gas Exchange related to retained secretions, associated with ventilation-perfusion imbalance from right lower lobe pneumonia, as evidenced by low oxygen saturation, fast breathing, fast heart rate, and restlessness.
- Oxygen saturation stays within the range the provider orders
- Respiratory rate and heart rate return toward her baseline within 48 hours
- Client is calm and alert, with no new confusion
- Monitor oxygen saturation, respiratory rate and effort, heart rate, and level of consciousness at the ordered frequency
- Give oxygen as ordered and adjust within the ordered range
- Position with the head of the bed raised; if ordered, position with the good lung down when lying on her side
- Cluster care so she can rest between activities
- Report rising oxygen needs, new confusion, increasing work of breathing, or falling blood pressure to the provider right away
- Give antibiotics on time as ordered; the first dose should not be delayed
Oxygen saturation stayed in the ordered range on 2 L/min, respiratory rate fell to 20, and heart rate to 92 by day 2. She remained alert and oriented. Goal met for now; continue monitoring.
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3. Decreased Activity Tolerance
Problem-focusedSubjective: “I get winded just walking to the bathroom. I’m too tired to shower.”
Objective: After walking 10 feet, heart rate rises from 108 to 124 and oxygen saturation drops from 93% to 88% on oxygen. Needs to stop and rest halfway.
Decreased Activity Tolerance related to imbalance between oxygen supply and demand, as evidenced by breathlessness and fatigue on exertion, a heart rate rise to 124, and a drop in oxygen saturation with walking.
- Client walks to the bathroom with oxygen without her oxygen saturation falling below the ordered range, within 48 hours
- Client names two ways to save energy during daily care by the end of the shift
- Client walks in the hallway with standby help before discharge
- Check heart rate, respiratory rate, and oxygen saturation before, during, and after activity
- Stop the activity and let her rest if she becomes very short of breath, dizzy, or her oxygen saturation drops below the ordered range
- Plan rest periods between care, meals, and therapy
- Increase activity a step at a time: dangling, chair, bathroom, hallway, as tolerated
- Teach energy saving: sit to wash, keep items within reach, and pace tasks
- Keep oxygen on during activity as ordered
By day 3 she walked to the bathroom and back with oxygen, with oxygen saturation staying in the ordered range and heart rate returning to baseline within 3 minutes of rest. She showered sitting on a shower chair. Goal met; progress to hallway walks.
4. Risk for Deficient Fluid Volume
Risk diagnosis- Fever, which increases fluid loss through the skin
- Fast breathing, which increases fluid loss through the lungs
- Poor oral intake for two days
- Fatigue that makes it hard to drink on her own
No “as evidenced by” — her blood pressure is stable and she is not yet showing signs of a fluid deficit that require a problem-focused diagnosis. If her urine output drops or her blood pressure falls, change to Deficient Fluid Volume.
Risk for Deficient Fluid Volume related to fever, fast breathing, and poor oral intake.
- Urine output stays within the range the provider orders
- Mucous membranes are moist and urine is light yellow within 48 hours
- Blood pressure and heart rate stay within her expected range
- Measure intake and output, and weigh daily on the same scale at the same time
- Give IV fluids as ordered and watch for fluid overload: crackles getting worse, swelling, and shortness of breath
- Keep water and drinks she likes within reach, and offer fluids each time you are in the room unless restricted
- Treat fever with antipyretics as ordered and cooling comfort measures
- Check skin turgor, mucous membranes, urine color, and orthostatic vital signs if ordered
- Review electrolytes and kidney function results as ordered and report abnormal values
By day 2 her fever had resolved, she was drinking on her own, urine was light yellow, mucous membranes were moist, and blood pressure stayed stable. Goal met; discontinue when IV fluids stop and intake is adequate.
Interventions and rationales
Client and family teaching
- Explain in plain words that the provider is treating the infection, and the nursing team is helping with breathing, energy, comfort, and fluids
- Show how to cough and deep breathe with a pillow held against the chest, and how to use the incentive spirometer as ordered
- Drink fluids through the day unless the provider has limited them
- Pace activities, sit for tasks such as washing, and rest before you get exhausted
- Take every dose of the antibiotic as prescribed, even after you feel better
- Do not smoke, and avoid secondhand smoke
- Ask the provider about pneumonia and flu vaccines
- Call the provider for a fever that returns, worsening cough, or new chest pain; call emergency services for severe shortness of breath, bluish lips, or confusion
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A nurse is writing a care plan for a client admitted with pneumonia who has crackles, thick sputum, and a weak cough. Which statement is a nursing diagnosis?
Why B. Ineffective Airway Clearance is a NANDA-I label describing the client’s response, with a cause nursing can treat. Pneumonia is a medical diagnosis, hypoxemia is a medical finding rather than a NANDA-I label, and sepsis written as a potential complication is a collaborative problem. Prep also explains why each wrong option looks reasonable.
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Frequently asked questions
What is the main difference between a nursing diagnosis and a medical diagnosis?
A medical diagnosis names the disease, such as pneumonia. A nursing diagnosis names the client’s response to it, such as Ineffective Airway Clearance, and guides the care nurses plan and give on their own.
Can a nurse make a medical diagnosis?
A registered nurse does not make medical diagnoses. Nurse practitioners, who are advanced practice registered nurses, can diagnose and treat medical conditions within their state’s scope of practice.
Is pain a nursing diagnosis or a medical diagnosis?
Acute Pain and Chronic Pain are NANDA-I nursing diagnoses. Pain is also a symptom providers use to make medical diagnoses, but in a care plan it is written as a nursing diagnosis with its cause and evidence.
Can a medical diagnosis go in a nursing diagnosis statement?
Yes, but not as the label. NANDA-I treats medical diagnoses as associated conditions. Many programs ask students to write the medical diagnosis after the related factors, for example “related to retained secretions, associated with pneumonia.” Follow your program’s format.
What are the types of nursing diagnoses?
Problem-focused, risk, health promotion, and syndrome diagnoses. Problem-focused diagnoses include “as evidenced by”; risk diagnoses list risk factors only; health promotion diagnoses begin with “Readiness for Enhanced.”
Why do nurses use nursing diagnoses?
They give nurses a shared language for problems nursing can treat, link assessment data to outcomes and interventions, and make the care plan something that can be measured and evaluated.
References
- Herdman, T. H., Kamitsuru, S., & Lopes, C. T. (Eds.). NANDA International Nursing Diagnoses: Definitions and Classification, 2024–2026. Thieme.
- Ackley, B. J., Ladwig, G. B., Makic, M. B. F., Martinez-Kratz, M. R., & Zanotti, M. Nursing Diagnosis Handbook: An Evidence-Based Guide to Planning Care (13th ed.). Elsevier, 2023.
- Carpenito, L. J. Nursing Diagnosis: Application to Clinical Practice (16th ed.). Wolters Kluwer, 2023.
- Potter, P. A., Perry, A. G., Stockert, P. A., & Hall, A. M. Fundamentals of Nursing (11th ed.). Elsevier, 2023.
- Sanson, G., Vellone, E., Kangasniemi, M., Alvaro, R., & D’Agostino, F. Impact of nursing diagnoses on patient and organisational outcomes: a systematic literature review. Journal of Clinical Nursing, 2017;26(23–24):3764–3783.
- Metlay, J. P., Waterer, G. W., Long, A. C., et al. Diagnosis and treatment of adults with community-acquired pneumonia: an official clinical practice guideline of the ATS and IDSA. American Journal of Respiratory and Critical Care Medicine, 2019;200(7):e45–e67.
- Silvestri, L. A., & Silvestri, A. E. Saunders Comprehensive Review for the NCLEX-RN Examination (9th ed.). Elsevier, 2023.
Scope of practice for diagnosing varies by state and country. Nursing diagnosis formats vary by nursing program; follow your instructor’s required format. In the worked example, oxygen saturation targets, oxygen orders, fluid orders and limits, activity orders, urine output parameters, and escalation criteria vary by client, by provider, and by facility. Follow the provider’s written orders and your own institution’s policies. This page supports study and does not replace course instruction or clinical judgment.
