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R22.40
ICD-10-CM
Lower Leg Swelling

Understanding lower leg swelling? Find information on edema, peripheral edema, leg swelling causes, venous insufficiency, deep vein thrombosis DVT, cellulitis, lymphedema, congestive heart failure CHF, kidney disease, medication side effects, leg swelling diagnosis, and treatment options. Learn about relevant ICD-10 codes, clinical documentation improvement CDI best practices, and healthcare coding guidelines for accurate reporting of lower extremity swelling. Explore resources for patients and healthcare professionals.

Also known as

Leg Edema
Peripheral Edema
Calf Swelling

Diagnosis Snapshot

Key Facts
  • Definition : Fluid buildup in the lower leg, causing noticeable swelling.
  • Clinical Signs : Swollen ankles or feet, tight skin, pain or discomfort, pitting edema.
  • Common Settings : Venous insufficiency, heart failure, kidney disease, injury, DVT.

Related ICD-10 Code Ranges

Complete code families applicable to AAPC R22.40 Coding
R22.2

Localized swelling, lower leg

Swelling confined to the lower leg.

I87.2

Venous insufficiency (chronic)

Impaired venous blood flow, often causing leg swelling.

I89.1

Nonspecific peripheral edema

Generalized swelling in the extremities, including lower legs.

R60.9

Edema, unspecified

Swelling without a specified cause, potentially in the lower legs.

Code-Specific Guidance

Decision Tree for

Follow this step-by-step guide to choose the correct ICD-10 code.

Is swelling due to trauma/injury?

  • Yes

    Fracture present?

  • No

    Sign of infection (cellulitis)?

Code Comparison

Related Codes Comparison

When to use each related code

Description
Lower Leg Swelling
Venous Insufficiency
Deep Vein Thrombosis (DVT)

Documentation Best Practices

Documentation Checklist
  • Lower leg swelling location, laterality (R/L/B)
  • Swelling onset, duration, character (pitting/non-pitting)
  • Associated symptoms: pain, redness, warmth, shortness of breath
  • Relevant medical history: DVT, CHF, trauma, surgery
  • Physical exam findings: tenderness, skin changes, pulses

Coding and Audit Risks

Common Risks
  • Unspecified Edema Coding

    Coding lower leg swelling with unspecified edema codes (e.g., R60.9) without proper documentation of the underlying cause leads to inaccurate reimbursement and data reporting.

  • Venous Insufficiency Overlooked

    Failing to code chronic venous insufficiency (I87.2) when clinically evident in lower leg swelling cases can impact quality metrics and appropriate care planning.

  • CHF vs. Other Edema

    Miscoding lower leg swelling due to congestive heart failure (I50.9) as other edema or vice versa affects severity of illness reporting and financial outcomes.

Mitigation Tips

Best Practices
  • Document swelling location, laterality, & duration for accurate ICD-10 coding (e.g., R79.1)
  • Capture edema severity (pitting, non-pitting) & associated symptoms for precise CDI
  • Evaluate for DVT, CHF, CKD to meet medical necessity & ensure compliant billing
  • Assess medication list for contributing factors (e.g., NSAIDs, steroids) to optimize treatment
  • Order appropriate diagnostic tests (e.g., venous duplex ultrasound) for compliant documentation

Clinical Decision Support

Checklist
  • Rule out DVT: Wells score documented?
  • Assess for cellulitis: Skin changes noted?
  • Chronic venous insufficiency signs present?
  • Heart failure symptoms or history checked?
  • Medication review: Edema-causing drugs?

Reimbursement and Quality Metrics

Impact Summary
  • Lower Leg Swelling: Coding accuracy impacts reimbursement for edema, cellulitis, DVT. Optimize ICD-10 (e.g., R22.2, I89.1, L03.1) & CPT codes for maximum payment.
  • Hospital reporting of Lower Leg Swelling: Accurate coding improves quality metrics for venous thromboembolism (VTE) prophylaxis compliance.
  • Lower Leg Swelling diagnosis: HCC risk adjustment coding affects RAF scores & reimbursement in value-based care.
  • Specificity improves quality data: Differentiating edema causes (heart failure, kidney disease) improves patient care and cost reporting.

Streamline Your Medical Coding

Let S10.AI help you select the most accurate ICD-10 codes for . Our AI-powered assistant ensures compliance and reduces coding errors.

Quick Tips

Practical Coding Tips
  • Specify swelling location: ankle, calf, etc.
  • Document swelling laterality: unilateral, bilateral
  • Rule out DVT, CHF, cellulitis in documentation
  • Include onset, duration, character of swelling
  • Consider ICD-10 codes: R22.2, R60.0, I84.x

Documentation Templates

Patient presents with complaints of lower leg swelling, also described as leg edema or ankle swelling.  Onset of swelling was [duration] and is [character: unilateral or bilateral, constant or intermittent].  Patient reports associated symptoms of [list associated symptoms e.g., pain, tenderness, redness, warmth, skin discoloration, shortness of breath, chest pain, difficulty walking, limited range of motion].  Medical history includes [list relevant medical history e.g., hypertension, diabetes, heart failure, kidney disease, deep vein thrombosis, venous insufficiency, cellulitis, recent surgery, trauma, prolonged immobility, medications].  Physical examination reveals [objective findings e.g., pitting or non-pitting edema, presence of varicose veins, skin temperature and color, capillary refill, pulses, circumference measurements, tenderness to palpation].  Differential diagnosis includes venous insufficiency, deep vein thrombosis, heart failure, lymphedema, cellulitis, kidney disease, medication side effects.  Preliminary diagnosis is [preliminary diagnosis].  Ordered [diagnostic tests e.g., venous Doppler ultrasound, D-dimer, blood tests, urinalysis, echocardiogram].  Plan includes [treatment plan e.g., leg elevation, compression stockings, medications such as diuretics, anticoagulants, antibiotics, referral to specialist such as vascular surgeon, cardiologist, nephrologist].  Patient education provided on [patient education topics e.g.,  risk factors for lower leg swelling, importance of compliance with treatment plan, signs and symptoms of complications, follow-up care].  Return for follow-up in [duration] to assess treatment response and adjust plan as needed.