Critical Limb Ischemia Coding in ICD10- -CM
Critical Limb Ischemia Coding in ICD-10-CM
Adi Renbaum, MBA ANR Consulting, LLC
Linda Holtzman, MHA, RHIA, CCS, CCS-P, CPC, COC Clarity Coding, Inc
on behalf of
OVERVIEW
Critical Limb Ischemia ? Clinical Nature ? Treatment ? ICD-10-CM Coding ? Sample Coding Scenarios
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BURDEN OF CRITICAL LIMB ISCHEMIA
? After a diagnosis of critical limb ischemia, risk of mortality is 24% at 1 year and 60% over 5 years.
? Inpatient hospitalization is common and up to 60% of patients are readmitted within 6 months.
? About 150,000 amputations occur in the US annually due to critical limb ischemia.
? Patients with CLI are at increased risk of major cardiovascular complications, eg, AMI, stroke.
? The annual US economic burden of CLI was recently estimated at over $200 billion.
"Overall, the high incidence of critical limb ischemia in combination with its highly fatal course make the disease an under-recognized major threat to public health."
Mustapha JA, Katzen BT, Neville RF, Lookstein RA, et al. Critical limb Ischemia: a threat to life and limb. Endovasc Today. 2019;18(5):80-82
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CLINICAL NATURE OF
CRITICAL LIMB ISCHEMIA
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PERIPHERAL ARTERY DISEASE
? In peripheral artery disease, plaque builds up in the peripheral arteries over time, narrowing or blocking the lumen of the vessel.
? This reduces or obstructs blood flow through the artery, preventing sufficient oxygen from reaching the distal extremities.
? About 12% of US adults have some degree of clinically significant peripheral artery disease.
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CRITICAL LIMB ISCHEMIA
? Of those with peripheral artery disease, about 11% eventually go on to develop critical limb ischemia.
? The prevalence of critical limb ischemia in the US is about 1.3% .
Critical limb ischemia is essentially end-stage peripheral artery disease of the lower extremities.
In critical limb ischemia, the limb is endangered.
Commonly Used Abbreviations
CLI = Critical Limb Ischemia
CLTI = Chronic Limb-Threatening
Ischemia
The abbreviations are interchangeable.
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CLINICAL DEFINITION OF CLI
? CLI is characterized by the hallmarks of chronic ischemia with inadequate blood supply to the tissues.
? A diagnosis of CLI requires at least one of manifestations.
? By its nature, CLI is a chronic condition.
"Clinically, critical limb ischemia (CLI) is defined as ischemic rest pain, tissue loss, or gangrene in the presence of peripheral artery disease (PAD) and hypoperfusion of the lower extremity."
Critical Limb Ischemia: An Expert Statement, MH Shishehbor et al, Journal of the American College of Cardiology, 2016, Volume 68, No 18.
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PROGRESSION : PAD CLI
Asymptomatic peripheral artery disease
Intermittent Claudication
- Pain affecting the calf, thigh, or buttock, ____in_d_u_c_e_d__b_y_e_x_e_rc_i_s_e_a_n_d_r_e_l_ie_v_e_d_b_y__r_e_st___
Rest Pain
- Ischemic pain, usually in the foot and usually at night, when at rest or lying down
Tissue Loss (Ulceration)
- Skin breakdown, chronic and non-healing
Gangrene
- Tissue death
Critical limb ischemia does not always progress through the various stages.
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