CPCA ICD-10-CM Coding for Skin — Questions and Answers

Question 1: A patient is diagnosed with a stage 3 pressure ulcer of the right heel. Which ICD-10-CM code applies?

L89.613 (Correct answer)
L89.612
L89.614
L89.610

Correct answer: L89.613

L89.613 is the correct code for a stage 3 pressure ulcer of the right heel in ICD-10-CM.

Question 2: What ICD-10-CM code category is used for non-pressure chronic ulcers of the lower limb?

L97 (Correct answer)
L89
L98
L84

Correct answer: L97

Category L97 covers non-pressure chronic ulcers of the lower limb, not elsewhere classified.

Question 3: When coding a burn, which 7th character indicates the encounter is for aftercare of a healing burn?

D (Correct answer)
A
S
E

Correct answer: D

The 7th character 'D' indicates a subsequent encounter for a healing burn in ICD-10-CM.

Question 4: A patient presents with a second-degree burn of the left palm. Which code is correct?

T23.252A (Correct answer)
T23.152A
T23.202A
T23.352A

Correct answer: T23.252A

T23.252A represents a second-degree burn of the left palm, initial encounter.

Question 5: What is the ICD-10-CM code for an unstageable pressure ulcer of the sacral region?

L89.150 (Correct answer)
L89.151
L89.154
L89.159

Correct answer: L89.150

L89.150 represents an unstageable pressure ulcer of the sacral region.

Question 6: Which code represents total body surface area (TBSA) burned when 30-39% of body surface has third-degree burns?

T31.33 (Correct answer)
T31.30
T32.33
T31.39

Correct answer: T31.33

T31.33 indicates 30-39% total body surface burned with 30-39% third-degree burns.

Question 7: A patient has a healed pressure ulcer of the left hip that has since resolved, but the current encounter documents its history. How should this be coded?

Z87.39 (Correct answer)
L89.222
L89.229
Z96.641

Correct answer: Z87.39

Z87.39 (personal history of other musculoskeletal disorders) or appropriate personal history code is used once a pressure ulcer has completely healed.

Question 8: What ICD-10-CM code applies to cellulitis of the right lower limb?

L03.115 (Correct answer)
L03.119
L03.113
L03.111

Correct answer: L03.115

L03.115 is the specific code for cellulitis of the right lower limb in ICD-10-CM.

Question 9: Which ICD-10-CM category covers cutaneous abscess, furuncle, and carbuncle?

L02 (Correct answer)
L03
L08
L00

Correct answer: L02

Category L02 in ICD-10-CM covers cutaneous abscess, furuncle, and carbuncle.

Question 10: A patient is diagnosed with impetigo without mention of a specific type or organism. What code applies?

L01.00 (Correct answer)
L01.01
L01.09
L00

Correct answer: L01.00

L01.00 represents impetigo, unspecified, when no specific type or organism is documented.

Question 11: A Type 2 diabetic patient presents with diabetic dermatitis. How should this be coded?

E11.620 (Correct answer)
L30.9, E11.9
E11.9, L30.9
E11.628

Correct answer: E11.620

E11.620 is the combination code for Type 2 diabetes mellitus with diabetic dermatitis.

Question 12: Which code represents tinea pedis (athlete's foot)?

B35.3 (Correct answer)
B35.1
L30.3
B36.0

Correct answer: B35.3

B35.3 is the ICD-10-CM code for tinea pedis (dermatophytosis of the foot).

Question 13: A patient has herpes zoster with associated skin eruption. Which code is sequenced first?

B02.9 (Correct answer)
L53.9
B02.0
L00

Correct answer: B02.9

The herpes zoster code (B02.x) is sequenced first, as it is the underlying cause of the skin manifestation.

Question 14: Scabies is classified in which ICD-10-CM code?

B86 (Correct answer)
L29.0
B85.0
L28.0

Correct answer: B86

B86 is the ICD-10-CM code for scabies, a parasitic skin infestation caused by Sarcoptes scabiei.

Question 15: 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 16: 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 17: 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 18: 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 19: 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 20: 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 21: 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

A patient is diagnosed with a stage 3 pressure ulcer of the right heel.
Which ICD-10-CM code applies?

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