Allergy / Immunology

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Allergy / Immunology

Diagnoses

Acute Coronary Syndrome (ACS)
Acute Myocardial Infarction
Angioplasty / PCI of Coronary Vessels / Percutaneous Coronary Intervention
Angioplasty of Non-Coronary Vessels
Arrhythmia / Dysrhythmia / Rhythm and Conduction Disorders
Atherosclerotic Heart Disease (ASHD) / Angina
Atrial Fibrillation (AFib)
Atrial Flutter
Cardiac Arrest
Cardiomyopathy
Cerebrovascular Accident (CVA) / Cerebral or Subarachnoid Hemorrhage Non-Traumatic
Chest Pain
Coma
Diabetic Neuropathy
Encephalopathy
Glomerulonephritis
Heart Failure / Congestive Heart Failure (CHF)
Heart Valves
Hematuria
Hepatic Failure
Hypertension
Nephrotic Syndrome
Pancreatitis
Paresis / Paraplegia / Quadriplegia
Parkinson's Disease
Pyelonephritis
Renal Failure / Renal Insufficiency
Spinal Cord Injury
Spondylosis
Transient Ischemic Attack (TIA)
Traumatic Brain Hemorrhage
Traumatic Vertebral Fractures
Ureter and Urethral Stricture
Urinary Tract Infection (UTI)
Vesicoureteral Reflux

ICD-9 to ICD-10 Crosswalk

The codes in these crosswalks were selected based on the most commonly used ICD-9 codes according to historical MedStar Health coding data and from professional coding associations, and are ordered by frequency of use. 

Not all the codes you need are contained in this list. For a comprehensive list of ICD-10 codes, use Diagnosis Assistant or the IMO Anywhere tool.

Code Description (ICD-9 codes are in blue)
477.2 Allergic rhinitis, due to animal (cat) (dog) hair and dander
J30.81 Allergic rhinitis due to animal (cat) (dog) hair and dander
477.0 Allergic rhinitis due to pollen
J30.1 Allergic rhinitis due to pollen
112.9 Candidiasis of unspecified site
B37.82 Candidal enteritis
B37.83 Candidal cheilitis
B37.84
Candidal otitis externa
B37.89
Other sites of candidiasis
B37.41
Candidal cystitis and urethritis
B37.42
Candidal balanitis
B37.49
Other urogenital candidiasis (includes candidal pyleonephritis)
B37.5
Candidal meningitis
B37.6
Candidal endocarditis
B37.7
Candidal sepsis
B37.3
Candidiasis of vulva and vagina
B37.2
Candidiasis of skin and nail
B37.9
Candidiasis, unspecific
279.06 Common variable immunodeficiency

With diagnosis selection, differentiate abnormalities of B cell numbers/function and auto antibodies to B or T cells:
D83.0 Common variable immunodeficiency with predominant abnormalities of B-cell numbers and function
D83.2
Common variable immunodeficiency with autoantibodies to B- or T-cells
D83.8
Other common variable immunodeficiencies
D83.9
Common variable immunodeficiency, unspecified
477.8 Allergic rhinitis due to other allergen
J30.2 Other seasonal allergic rhinitis
J30.89 Other allergic rhinitis
279.3 Unspecified immunity deficiency
D84.8 Other specified immunodeficiencies
D84.9 Immunodeficiency, unspecified
279.03 Other selective immunoglobulin deficiencies

With ICD-9, the description of other selective immunoglobulin deficiencies includes selective deficiency of IgG. Under ICD-10, there is a specific description/code for this condition:
D80.3 D80.3-Selective deficiency of immunoglobulin G [IgG] subclasses
780.79 Other malaise and fatigue
G93.3 Postviral fatigue syndrome
R53.1 Weakness
R53.81
Other malaise
R53.83
Other fatigue
R53.0
Neoplastic (malignant) related fatigue
708.8 Other specified urticaria

Document cause of urticria when known, (i.e. cold, heat, vibratory, contact, etc.) or idiopathic or allergic
L50.0 Allergic urticaria
L50.1
Idiopathic urticaria
L50.2
Urticaria due to cold and heat
L50.3
Dermatographic urticaria
L50.4
Vibratory urticaria
L50.5
Cholinergic urticaria
L50.6
Contact urticaria
L50.8
Other urticaria
L50.9
Urticaria, unspecified
473.9 Unspecified sinusitis (chronic)
J32.0 Chronic maxillary sinusitis
J32.1 Chronic frontal sinusitis
J32.2
Chronic ethmoidal sinusitis
J32.3
Chronic sphenoidal sinusitis
J32.4
Chronic pansinusitis
J32.8
Other chronic sinusitis
054.9 Herpes simplex without complication
B00.89 Other herpesviral infection
054.6 Herpetic whitlow
493.0 Extrinsic asthma unspecified
J45.20 Mild intermittent asthma, uncomplicated
J45.30 Mild persistent asthma, uncomplicated
J45.40
Moderate persistent asthma, uncomplicated
J45.50
Severe persistent asthma, uncomplicated
087.9 Relapsing fever unspecified
A68.0 Louse-borne relapsing fever
A68.1 Tick-borne relapsing fever
A68.9
Relapsing fever, unspecified
279.04 Congenital hypogammaglobulinemia
D80.0 Hereditary hypogammaglobulinemia
714.3 Juvenile chronic polyarthritis

With ICD-10, no longer required to differentiate between acute and chronic juvenile rheumatoid arthritis. Polyarticular is no longer a diagnosis option.

Unspecified juvenile rheumatoid arthritis,
M08.011
right shoulder
M08.012
left shoulder
M08.019
unspecified shoulder
M08.031
right wrist
M08.032
left wrist
M08.039
unspecified wrist
M08.041
right hand
M08.042
left hand
M08.049
unspecified hand
M08.09
multiple sites
696.1 Other psoriasis and similar disorders
L40.0 Psoriasis vulgaris
L40.1 Generalized pustular psoriasis
L40.2
Acrodermatitis continua
L40.3
Pustulosis palmaris et plantaris
L40.4
Guttate psoriasis
L40.8
Other psoriasis
L40.9
Psoriasis, unspecified
710.0 Systemic lupus erythematosus

Note if SLE is drug induced and whether there is organ or system involvement:
M32.0 Drug-induced systemic lupus erythematosus
M32.8
Other forms of systemic lupus erythematosus
M32.9
Systemic lupus erythematosus, unspecified
M32.11
Endocarditis in systemic lupus erythematosus
M32.12
Pericarditis in systemic lupus erythematosus
M32.13
Lung involvement in systemic lupus erythematosus
M32.14
Glomerular disease in systemic lupus erythematosus
M32.15
Tubulo-interstitial nephropathy in systemic lupus erythematosus
M32.19
Other organ or system involvement in systemic lupus erythematosus
531.9 Gastric ulcer unspecified as acute or chronic without hemorrhage or perforation without obstruction

Notation of the presence or absence of an obstruction with gastric ulcer not required under ICD-10. Documentation should differentiate between acute and chronic ulcer, also note absence or presence of a hemorrhage or perforation:

Acute gastric ulcer
K25.0
with hemorrhage
K25.1
with perforation
K25.2
with both hemorrhage and perforation
K25.3
without hemorrhage or perforation

Chronic or unspecified gastric ulcer
K25.4
with hemorrhage
K25.5
with perforation
K25.6
with both hemorrhage and perforation
K25.9
Gastric ulcer, unspecified as acute or chronic, without hemorrhage or perforation
279.2 Combined immunity deficiency

Note presence of reticular dysgenesis and level of T and B cell numbers. The detailed diagnosis choices under ICD-10 include:

Severe combined immunodeficiency [SCID]
D81.0
with reticular dysgenesis
D81.1
with low T- and B-cell numbers
D81.2
with low or normal B-cell numbers
D81.89
Other combined immunodeficiencies
D81.9
Combined immunodeficiency, unspecified
D81.6
Major histocompatibility complex class I deficiency
D81.7
Major histocompatibility complex class II deficiency
695.10 Erythema multiforme, unspecified
L51.0 Nonbullous erythema multiforme
L51.9
Erythema multiforme, unspecified
494.0 Bronchiectasis without acute exacerbation

Bronchiectasis
J47.0
with acute lower respiratory infection
J47.1
with (acute) exacerbation
J47.9
Bronchiectasis, uncomplicated
995.1 Angioneurotic edema

Angioneurotic edema
T78.3XXA
initial encounter
T78.3XXD
subsequent encounter
T78.3XXS
sequela
078.5 Cytomegaloviral disease
B25.0 Cytomegaloviral pneumonitis
B25.1 Cytomegaloviral hepatitis
B25.2
Cytomegaloviral pancreatitis
B25.8
Other cytomegaloviral diseases
B25.9
Cytomegaloviral disease, unspecified
279.01 Selective IgA immunodeficiency
D80.2 Selective IgA immunodeficiency
279.02 Selective IgM immunodeficiency
D80.4 Selective IgM immunodeficiency
279.04 Congenital hypogammaglobulinemia
D80.0 Congenital hypogammaglobulinemia
112.3 Candidiasis of skin and nails
B37.2 Candidiasis of skin and nails
053.9 Herpes zoster without complication
B02.9 Herpes Zoster without complications