ICD-10-CM Use Additional Code Notes · Chapter 12 · FY 2027 L00-L99
Use Additional Code Notes in Chapter 12: Diseases of the skin and subcutaneous tissue ICD-10-CM
A Use Additional Code note means a second code should be added, after this one, to fully describe the condition. In Chapter 12 (L00-L99), notes printed in the chapter name other codes 40 times, and Use Additional Code Notes anywhere in the Tabular List name the chapter’s codes 75 times, covering 17 distinct codes, categories and ranges. Switch views to read the list either way.
✓ From the official FY 2027 ICD-10-CM Tabular ListDefinitions follow the Official Guidelines, Section I.A
40
References in Its Notes
75
References to Its Codes
17
Chapter Codes Named
L00-L99
Chapter 12
Chapter 12
Use Additional Code Notes by the code that carries the note
25 of 25 shown
- L00 Staphylococcal scalded skin syndrome
- code to identify percentage of skin exfoliation (L49.-)
- L10.5 Drug-induced pemphigus
- L12.31 Epidermolysis bullosa due to drug
- L23.3 Allergic contact dermatitis due to drugs in contact with skin
- L24.4 Irritant contact dermatitis due to drugs in contact with skin
- code to identify any artificial opening status (Z93.-), if applicable, for contact dermatitis related to stoma secretions
- L25.1 Unspecified contact dermatitis due to drugs in contact with skin
- L27.0 Generalized skin eruption due to drugs and medicaments taken internally
- L27.1 Localized skin eruption due to drugs and medicaments taken internally
- L29.81 Cholestatic pruritus
- L43.2 Lichenoid drug reaction
- code for adverse effect, if applicable, to identify drug (T36-T50 with fifth or sixth character 5)
- arthropathy associated with dermatological disorders (M14.8-)
- conjunctival edema (H11.42)
- conjunctivitis (H10.22-)
- corneal scars and opacities (H17.-)
- corneal ulcer (H16.0-)
- edema of eyelid (H02.84-)
- inflammation of eyelid (H01.8-)
- keratoconjunctivitis sicca (H16.22-)
- mechanical lagophthalmos (H02.22-)
- stomatitis (K12.-)
- symblepharon (H11.23-)
- code to identify percentage of skin exfoliation (L49.-)
- L53.0 Toxic erythema
- L56.0 Drug phototoxic response
- L56.1 Drug photoallergic response
- L64.0 Drug-induced androgenic alopecia
- L92.3 Foreign body granuloma of the skin and subcutaneous tissue
- code to identify the type of retained foreign body (Z18.-)
- T65.84 Toxic effect of xylazine: cutaneous abscess, furuncle and carbuncle (L02.-)
- L03.221 Cellulitis of neck
- J95.02 Infection of tracheostomy stoma: cellulitis of neck (L03.221)
- L03.311 Cellulitis of abdominal wall
- K94.02 Colostomy infection: cellulitis of abdominal wall (L03.311)
- K94.12 Enterostomy infection: cellulitis of abdominal wall (L03.311)
- K94.22 Gastrostomy infection: cellulitis of abdominal wall (L03.311)
- K95.01 Infection due to gastric band procedure: cellulitis of abdominal wall (L03.311)
- K95.81 Infection due to other bariatric procedure: cellulitis of abdominal wall (L03.311)
- T65.84 Toxic effect of xylazine: cellulitis and acute lymphangitis (L03.-)
- L13.0 Dermatitis herpetiformis
- K90.0 Celiac disease: dermatitis herpetiformis (L13.0)
- L30.8 Other specified dermatitis
- D89.81 Graft-versus-host disease: desquamative dermatitis (L30.8)
- L49.- Exfoliation due to erythematous conditions according to extent of body surface involved 10 codes
- L65.9 Nonscarring hair loss, unspecified
- D89.81 Graft-versus-host disease: hair loss (L65.9)
- L88 Pyoderma gangrenosum
- G90.4 Autonomic dysreflexia: pressure ulcer (pressure area) (L89.-)
- L97.1-L97.9 Non-pressure chronic ulcer of thigh to Non-pressure chronic ulcer of unspecified part of lower leg 168 codes
- E08.622 Diabetes mellitus due to underlying condition with other skin ulcer: code to identify site of ulcer (L97.1-L97.9, L98.41-L98.49)
- E09.622 Drug or chemical induced diabetes mellitus with other skin ulcer: code to identify site of ulcer (L97.1-L97.9, L98.41-L98.49)
- E10.622 Type 1 diabetes mellitus with other skin ulcer: code to identify site of ulcer (L97.1-L97.9, L98.41-L98.49)
- E11.622 Type 2 diabetes mellitus with other skin ulcer: code to identify site of ulcer (L97.1-L97.9, L98.41-L98.49)
- E13.622 Other specified diabetes mellitus with other skin ulcer: code to identify site of ulcer (L97.1-L97.9, L98.41-L98.49)
- E08.621 Diabetes mellitus due to underlying condition with foot ulcer: code to identify site of ulcer (L97.4-, L97.5-)
- E09.621 Drug or chemical induced diabetes mellitus with foot ulcer: code to identify site of ulcer (L97.4-, L97.5-)
- E10.621 Type 1 diabetes mellitus with foot ulcer: code to identify site of ulcer (L97.4-, L97.5-)
- E11.621 Type 2 diabetes mellitus with foot ulcer: code to identify site of ulcer (L97.4-, L97.5-)
- E13.621 Other specified diabetes mellitus with foot ulcer: code to identify site of ulcer (L97.4-, L97.5-)
- E08.621 Diabetes mellitus due to underlying condition with foot ulcer: code to identify site of ulcer (L97.4-, L97.5-)
- E09.621 Drug or chemical induced diabetes mellitus with foot ulcer: code to identify site of ulcer (L97.4-, L97.5-)
- E10.621 Type 1 diabetes mellitus with foot ulcer: code to identify site of ulcer (L97.4-, L97.5-)
- E11.621 Type 2 diabetes mellitus with foot ulcer: code to identify site of ulcer (L97.4-, L97.5-)
- E13.621 Other specified diabetes mellitus with foot ulcer: code to identify site of ulcer (L97.4-, L97.5-)
- I70.23 Atherosclerosis of native arteries of right leg with ulceration: code to identify severity of ulcer (L97.-)
- I70.24 Atherosclerosis of native arteries of left leg with ulceration: code to identify severity of ulcer (L97.-)
- I70.26 Atherosclerosis of native arteries of extremities with gangrene: code to identify the severity of any ulcer (L97.-, L98.49-), if applicable
- I70.33 Atherosclerosis of unspecified type of bypass graft(s) of the right leg with ulceration: code to identify severity of ulcer (L97.-)
- I70.34 Atherosclerosis of unspecified type of bypass graft(s) of the left leg with ulceration: code to identify severity of ulcer (L97.-)
- I70.36 Atherosclerosis of unspecified type of bypass graft(s) of the extremities with gangrene: code to identify the severity of any ulcer (L97.-, L98.49-), if applicable
- I70.43 Atherosclerosis of autologous vein bypass graft(s) of the right leg with ulceration: code to identify severity of ulcer (L97.-)
- I70.44 Atherosclerosis of autologous vein bypass graft(s) of the left leg with ulceration: code to identify severity of ulcer (L97.-)
- I70.46 Atherosclerosis of autologous vein bypass graft(s) of the extremities with gangrene: code to identify the severity of any ulcer (L97.-, L98.49-), if applicable
- I70.53 Atherosclerosis of nonautologous biological bypass graft(s) of the right leg with ulceration: code to identify severity of ulcer (L97.-)
- I70.54 Atherosclerosis of nonautologous biological bypass graft(s) of the left leg with ulceration: code to identify severity of ulcer (L97.-)
- I70.56 Atherosclerosis of nonautologous biological bypass graft(s) of the extremities with gangrene: code to identify the severity of any ulcer (L97.-, L98.49-), if applicable
- I70.63 Atherosclerosis of nonbiological bypass graft(s) of the right leg with ulceration: code to identify severity of ulcer (L97.-)
- I70.64 Atherosclerosis of nonbiological bypass graft(s) of the left leg with ulceration: code to identify severity of ulcer (L97.-)
- I70.66 Atherosclerosis of nonbiological bypass graft(s) of the extremities with gangrene: code to identify the severity of any ulcer (L97.-, L98.49-), if applicable
- I70.73 Atherosclerosis of other type of bypass graft(s) of the right leg with ulceration: code to identify severity of ulcer (L97.-)
- I70.74 Atherosclerosis of other type of bypass graft(s) of the left leg with ulceration: code to identify severity of ulcer (L97.-)
- I70.76 Atherosclerosis of other type of bypass graft(s) of the extremities with gangrene: code to identify the severity of any ulcer (L97.-, L98.49-), if applicable
- I83.0 Varicose veins of lower extremities with ulcer: code to identify severity of ulcer (L97.-)
- I83.2 Varicose veins of lower extremities with both ulcer and inflammation: code to identify severity of ulcer (L97.-)
- I87.01 Postthrombotic syndrome with ulcer: code to specify site and severity of ulcer (L97.-)
- I87.03 Postthrombotic syndrome with ulcer and inflammation: code to specify site and severity of ulcer (L97.-)
- I87.2 Venous insufficiency (chronic) (peripheral): code, if applicable, to specify site and severity of ulcer (L97.-)
- I87.31 Chronic venous hypertension (idiopathic) with ulcer: code to specify site and severity of ulcer (L97.-)
- I87.33 Chronic venous hypertension (idiopathic) with ulcer and inflammation: code to specify site and severity of ulcer (L97.-)
- T65.84 Toxic effect of xylazine: non-pressure chronic ulcer of lower limb, not elsewhere classified (L97.-)
- L98.41-L98.49 Non-pressure chronic ulcer of buttock to Non-pressure chronic ulcer of skin of other sites 64 codes
- E08.622 Diabetes mellitus due to underlying condition with other skin ulcer: code to identify site of ulcer (L97.1-L97.9, L98.41-L98.49)
- E09.622 Drug or chemical induced diabetes mellitus with other skin ulcer: code to identify site of ulcer (L97.1-L97.9, L98.41-L98.49)
- E10.622 Type 1 diabetes mellitus with other skin ulcer: code to identify site of ulcer (L97.1-L97.9, L98.41-L98.49)
- E11.622 Type 2 diabetes mellitus with other skin ulcer: code to identify site of ulcer (L97.1-L97.9, L98.41-L98.49)
- E13.622 Other specified diabetes mellitus with other skin ulcer: code to identify site of ulcer (L97.1-L97.9, L98.41-L98.49)
- I70.25 Atherosclerosis of native arteries of other extremities with ulceration: code to identify the severity of the ulcer (L98.49-)
- I70.26 Atherosclerosis of native arteries of extremities with gangrene: code to identify the severity of any ulcer (L97.-, L98.49-), if applicable
- I70.35 Atherosclerosis of unspecified type of bypass graft(s) of other extremity with ulceration: code to identify severity of ulcer (L98.49-)
- I70.36 Atherosclerosis of unspecified type of bypass graft(s) of the extremities with gangrene: code to identify the severity of any ulcer (L97.-, L98.49-), if applicable
- I70.45 Atherosclerosis of autologous vein bypass graft(s) of other extremity with ulceration: code to identify severity of ulcer (L98.49)
- I70.46 Atherosclerosis of autologous vein bypass graft(s) of the extremities with gangrene: code to identify the severity of any ulcer (L97.-, L98.49-), if applicable
- I70.55 Atherosclerosis of nonautologous biological bypass graft(s) of other extremity with ulceration: code to identify severity of ulcer (L98.49)
- I70.56 Atherosclerosis of nonautologous biological bypass graft(s) of the extremities with gangrene: code to identify the severity of any ulcer (L97.-, L98.49-), if applicable
- I70.65 Atherosclerosis of nonbiological bypass graft(s) of other extremity with ulceration: code to identify severity of ulcer (L98.49)
- I70.66 Atherosclerosis of nonbiological bypass graft(s) of the extremities with gangrene: code to identify the severity of any ulcer (L97.-, L98.49-), if applicable
- I70.75 Atherosclerosis of other type of bypass graft(s) of other extremity with ulceration: code to identify severity of ulcer (L98.49)
- I70.76 Atherosclerosis of other type of bypass graft(s) of the extremities with gangrene: code to identify the severity of any ulcer (L97.-, L98.49-), if applicable
- T65.84 Toxic effect of xylazine: non-pressure chronic ulcer of skin, not elsewhere classified (L98.4-)
The first view lists notes printed in this chapter (a note on a category or block applies to every code beneath it). The second lists codes of this chapter named by Use Additional Code Notes anywhere in the Tabular List, including notes in other chapters.
← Chapter 11: Diseases of the digestive systemChapter 13: Diseases of the musculoskeletal system and connective tissue →
Questions About Use Additional Code Notes
What does a Use Additional Code note mean?
A Use Additional Code note tells you to add a second code, reported after the code that carries the note, to describe the condition completely. In an etiology/manifestation pair it sits at the etiology code and points to the manifestation (Section I.A.13). The FY 2027 Tabular List has 1,491 of them; 1,174 name other codes, with 1,438 references to 389 distinct codes, categories and ranges.
Where does the additional code go?
After the code carrying the note. For etiology/manifestation pairs the Guidelines are explicit: the etiology is sequenced first, followed by the manifestation code.
Related References
Source: FY 2027 ICD-10-CM Tabular List (CMS and NCHS) and the ICD-10-CM Official Guidelines for Coding and Reporting FY 2027, Section I.A. ICD List is not affiliated with CMS or NCHS.
