Abnormal Dlco C4073173
Abnormal DLCO means the lungs are not transferring oxygen to the blood as effectively as normal. Various lung diseases can cause this, including emphysema or interstitial lung disease. Treatment focuses on identifying and managing the underlying lung condition.
Key facts at a glance
- ICD-10
- J98.9
- ICD-11
- CA00.0
- Body system
- respiratory
- Severity
- moderate
- Chronic
- true
Signs and symptoms
Common signs and symptoms that may indicate this condition.
Warning signs - seek immediate care
Cyanosis
Bluish discoloration of the lips, fingertips, or skin due to low oxygen levels in the blood.
Seek emergency care immediately if cyanosis develops, as it indicates severe oxygen deprivation
Shortness of breath
(respiratory)Difficulty breathing or feeling winded, especially during physical activity or exertion.
Frequency: 80-90% of patients
Fatigue
(constitutional)Persistent tiredness and lack of energy that does not improve with rest.
Frequency: 70-80% of patients
Exercise intolerance
(constitutional)Inability to perform physical activities that were previously manageable without difficulty.
Frequency: 75-85% of patients
Dry cough
(respiratory)Persistent dry, non-productive cough that may last for weeks or months.
Frequency: 50-60% of patients
Rapid breathing
(respiratory)Faster than normal breathing rate, even at rest or with minimal activity.
Frequency: 40-50% of patients
Chest discomfort
(cardiovascular)Dull, aching, or pressure-like sensation in the chest that may worsen with deep breathing.
Frequency: 20-30% of patients
Dizziness with exertion
(neurologic)Feeling lightheaded or faint during physical activity or when standing up quickly.
Frequency: 15-25% of patients
Finger clubbing
(dermatologic)Rounding and enlargement of the fingertips and nails, often due to chronic low oxygen levels.
Frequency: 5-10% of patients
Wheezing
(respiratory)High-pitched whistling sound when breathing, especially during exhalation.
Frequency: 20-30% of patients
Diagnosis and tests
How this condition is diagnosed and what test results mean.
Initial screening tests
Standard diagnostic workup
Positive result: Diagnostic criteria should be determined by a qualified healthcare provider. [Content pending medical review.]
Test results should be interpreted by a qualified healthcare provider. [Content pending medical review.]
Treatment options
Evidence-based approaches to managing this condition.
First-line treatments
Pulmonary function testing
Regular monitoring of DLCO values and comprehensive pulmonary function tests to track disease progression and response to interventions.
Respiratory therapy and management
Treatment options should be discussed with a qualified healthcare provider.
Smoking cessation
Complete tobacco avoidance including secondhand smoke exposure, as smoking directly impairs gas exchange and worsens DLCO measurements.
Additional treatment options
Pulmonary rehabilitation
Supervised exercise training and breathing exercises to improve lung efficiency, oxygen utilization, and overall respiratory function.
physical_therapyBronchodilators and anti-inflammatory agents
Depending on underlying cause, bronchodilators or inhaled corticosteroids may be prescribed to reduce airway inflammation and improve gas exchange.
medicationNutritional support for lung health
Balanced diet rich in antioxidants, adequate protein intake, and maintenance of healthy weight to support respiratory muscle function and tissue repair.
dietaryWhen to seek medical help
Recognize when you need immediate medical attention.
Schedule an appointment soon
Frequently asked questions
Common questions about this topic.
What is Abnormal Dlco C4073173?
Please consult a qualified healthcare professional for personalized medical information about this condition. [Content pending medical review.]
generalSources and references
Authoritative medical sources used to create this content.
Graham BL,沐鸣2, Cooper BG, et al. Standardization of the Single-Breath Determination of Carbon Monoxide Uptake in the Lung. Eur Respir J. 2017;50(5):1700076.
Macintyre N, Crapo RO, Viegi G, et al. Standardisation of the measurement of lung volumes. Eur Respir J. 2005;26(3):511-522.
Hughes JMB. The single breath lung transfer factor (Tlco): a redemption story. Breathe (Sheff). 2022;18(4):220256.
Raghu G, Remy-Jardin M, Myers JL, et al. Diagnosis of Idiopathic Pulmonary Fibrosis. An Official ATS/ERS/JRS/ALAT Clinical Practice Guideline. Am J Respir Crit Care Med. 2018;198(5):e44-e68.
Hughes JMB, Pride NB. Examination of the carbon monoxide diffusing capacity (DLco) in relation to its Kco and VA components. Am J Respir Crit Care Med. 2012;186(2):132-139.
Global Initiative for Chronic Obstructive Lung Disease (GOLD). Global Strategy for the Diagnosis, Management, and Prevention of Chronic Obstructive Pulmonary Disease. 2023 Report.
Walters J, Gardiner P. Interpreting lung function tests: a practical guide. Breathe. 2011;7(4):346-357.
Pellegrino R, Viegi G, Brusasco V, et al. Interpretative strategies for lung function tests. Eur Respir J. 2005;26(5):948-968.
Johnson JD, Theurer WM. A stepwise approach to the interpretation of pulmonary function tests. Am Fam Physician. 2014;89(5):359-366.
American Thoracic Society. Single breath carbon monoxide diffusing capacity (transfer factor): recommendations for a standard technique. Am J Respir Crit Care Med. 1995;152(6 Pt 1):2185-2198.
Medication Comparisons
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This content is for general informational and educational purposes only and is not a substitute for professional medical advice, diagnosis, or treatment. Always seek the guidance of a qualified healthcare provider with any questions you have about a medical condition, and never disregard professional medical advice or delay seeking it because of something you read here.
If you think you may have a medical emergency, call your local emergency number or go to the nearest emergency department immediately.
Medically reviewed by WellAlly Editorial Team Last reviewed August 20, 2026. · Read our editorial policy