CPCA ICD-10-CM Coding for Skin 4 — Questions and Answers
Question 1: What ICD-10-CM code category covers psoriasis?
- L40 (Correct answer)
- L20
- L21
- L30
Correct answer: L40
Category L40 covers psoriasis, including plaque psoriasis (L40.0), pustular psoriasis, and psoriatic arthritis.
Question 2: A patient is diagnosed with allergic contact dermatitis due to poison ivy. Which category applies?
- L23 (Correct answer)
- L24
- L25
- L27
Correct answer: L23
L23 covers allergic contact dermatitis, which includes reactions to plants such as poison ivy.
Question 3: Which ICD-10-CM code describes seborrheic dermatitis of the scalp?
- L21.0 (Correct answer)
- L21.1
- L21.9
- L20.81
Correct answer: L21.0
L21.0 specifically identifies seborrheic capitis, or seborrheic dermatitis of the scalp.
Question 4: A patient has a malignant melanoma of the skin of the left upper eyelid. What code category applies?
- C43 (Correct answer)
- C44
- C46
- D22
Correct answer: C43
Category C43 covers malignant melanoma of skin, with additional characters specifying site and laterality.
Question 5: What is the correct code for basal cell carcinoma of the skin of the right ear?
- C44.211 (Correct answer)
- C44.212
- C44.219
- C44.221
Correct answer: C44.211
C44.211 represents basal cell carcinoma of the skin of the right ear and external auricular canal.
Question 6: A patient is diagnosed with atopic dermatitis of the upper limbs. Which code applies?
- L20.81 (Correct answer)
- L20.82
- L20.89
- L20.9
Correct answer: L20.81
L20.81 is the code for atopic dermatitis of the hands and upper limbs.
Question 7: Which ICD-10-CM code is used for alopecia areata, unspecified?
- L63.9 (Correct answer)
- L64.9
- L65.9
- L66.9
Correct answer: L63.9
L63.9 is the code for alopecia areata, unspecified, an autoimmune condition causing patchy hair loss.
CPCA ICD-10-CM Coding for Skin 4
What ICD-10-CM code category covers psoriasis?