ICD-10-CM Excludes2 Notes · Chapter 12 · FY 2027 L00-L99

Excludes2 Notes in Chapter 12: Diseases of the skin and subcutaneous tissue ICD-10-CM

An Excludes2 note means "NOT INCLUDED HERE": the excluded condition is not part of this code, but a patient may have both, so both codes may be reported. In Chapter 12 (L00-L99), notes printed in the chapter name other codes 195 times, and Excludes2 Notes anywhere in the Tabular List name the chapter’s codes 119 times, covering 74 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
195
References in Its Notes
119
References to Its Codes
74
Chapter Codes Named
L00-L99
Chapter 12
Chapter 12

Excludes2 Notes by the code that carries the note

53 of 53 shown
  • Chapter note Chapter 12 (L00-L99) Diseases of the skin and subcutaneous tissue applies to 1,001 codes
    • certain conditions originating in the perinatal period (P04-P96)
    • certain infectious and parasitic diseases (A00-B99)
    • complications of pregnancy, childbirth and the puerperium (O00-O9A)
    • congenital malformations, deformations, and chromosomal abnormalities (Q00-Q99)
    • endocrine, nutritional and metabolic diseases (E00-E88)
    • lipomelanotic reticulosis (I89.8)
    • neoplasms (C00-D49)
    • symptoms, signs and abnormal clinical and laboratory findings, not elsewhere classified (R00-R94)
    • systemic connective tissue disorders (M30-M36)
    • viral warts (B07.-)
  • Block note Block L00-L08 Infections of the skin and subcutaneous tissue applies to 159 codes
    • hordeolum (H00.0)
    • infective dermatitis (L30.3)
    • lupus panniculitis (L93.2)
    • panniculitis NOS (M79.3)
    • panniculitis of neck and back (M54.0-)
    • Perlèche NOS (K13.0)
    • Perlèche due to candidiasis (B37.0)
    • Perlèche due to riboflavin deficiency (E53.0)
    • pyogenic granuloma (L98.0)
    • relapsing panniculitis [Weber-Christian] (M35.6)
    • viral warts (B07.-)
    • zoster (B02.-)
  • L02 Cutaneous abscess, furuncle and carbuncle applies to 81 codes
    • abscess of anus and rectal regions (K61.-)
    • abscess of female genital organs (external) (N76.4)
    • abscess of male genital organs (external) (N48.2, N49.-)
  • L02.0 Cutaneous abscess, furuncle and carbuncle of face applies to 3 codes
    • abscess of ear, external (H60.0)
    • abscess of eyelid (H00.0)
    • abscess of head [any part, except face] (L02.8)
    • abscess of lacrimal gland (H04.0)
    • abscess of lacrimal passages (H04.3)
    • abscess of mouth (K12.2)
    • abscess of nose (J34.0)
    • abscess of orbit (H05.0)
    • submandibular abscess (K12.2)
  • L02.2 Cutaneous abscess, furuncle and carbuncle of trunk applies to 24 codes
    • abscess of breast (N61.1)
    • abscess of buttocks (L02.31)
    • abscess of female external genital organs (N76.4)
    • abscess of male external genital organs (N48.2, N49.-)
    • abscess of hip (L02.4)
  • L02.4 Cutaneous abscess, furuncle and carbuncle of limb applies to 21 codes
    • Cutaneous abscess, furuncle and carbuncle of groin (L02.214, L02.224, L02.234)
    • Cutaneous abscess, furuncle and carbuncle of hand (L02.5-)
    • Cutaneous abscess, furuncle and carbuncle of foot (L02.6-)
  • L03 Cellulitis and acute lymphangitis applies to 55 codes
    • cellulitis of anal and rectal region (K61.-)
    • cellulitis of external auditory canal (H60.1)
    • cellulitis of eyelid (H00.0)
    • cellulitis of female external genital organs (N76.4)
    • cellulitis of lacrimal apparatus (H04.3)
    • cellulitis of male external genital organs (N48.2, N49.-)
    • cellulitis of mouth (K12.2)
    • cellulitis of nose (J34.0)
    • eosinophilic cellulitis [Wells] (L98.3)
    • febrile neutrophilic dermatosis [Sweet] (L98.2)
    • lymphangitis (chronic) (subacute) (I89.1)
  • L03.11 Cellulitis of other parts of limb applies to 7 codes
  • L03.12 Acute lymphangitis of other parts of limb applies to 7 codes
    • acute lymphangitis of fingers (L03.2-)
    • acute lymphangitis of toes (L03.04-)
    • acute lymphangitis of groin (L03.324)
  • L03.211 Cellulitis of face
    • abscess of orbit (H05.01-)
    • cellulitis of ear (H60.1-)
    • cellulitis of eyelid (H00.0-)
    • cellulitis of head (L03.81)
    • cellulitis of lacrimal apparatus (H04.3)
    • cellulitis of lip (K13.0)
    • cellulitis of mouth (K12.2)
    • cellulitis of nose (internal) (J34.0)
    • cellulitis of orbit (H05.01-)
    • cellulitis of scalp (L03.81)
  • L03.31 Cellulitis of trunk applies to 9 codes
    • cellulitis of anal and rectal regions (K61.-)
    • cellulitis of breast NOS (N61.0)
    • cellulitis of female external genital organs (N76.4)
    • cellulitis of male external genital organs (N48.2, N49.-)
    • omphalitis of newborn (P38.-)
    • puerperal cellulitis of breast (O91.2)
  • L03.311 Cellulitis of abdominal wall
  • L03.811 Cellulitis of head [any part, except face]
  • L04.3 Acute lymphadenitis of lower limb
    • acute lymphadenitis of groin (L04.1)
  • L05.01 Pilonidal cyst with abscess
    • congenital sacral dimple (Q82.6)
    • parasacral dimple (Q82.6)
  • L05.91 Pilonidal cyst without abscess
    • congenital sacral dimple (Q82.6)
    • parasacral dimple (Q82.6)
  • Block note Block L20-L30 Dermatitis and eczema applies to 74 codes
    • chronic (childhood) granulomatous disease (D71-)
    • dermatitis gangrenosa (L08.0)
    • dermatitis herpetiformis (L13.0)
    • dry skin dermatitis (L85.3)
    • factitial dermatitis (L98.1)
    • perioral dermatitis (L71.0)
    • radiation-related disorders of the skin and subcutaneous tissue (L55-L59)
    • stasis dermatitis (I87.2)
  • L20.8 Other atopic dermatitis applies to 5 codes
    • circumscribed neurodermatitis (L28.0)
  • L21 Seborrheic dermatitis applies to 4 codes
    • infective dermatitis (L30.3)
    • seborrheic keratosis (L82.-)
  • L23 Allergic contact dermatitis applies to 11 codes
    • dermatitis due to substances taken internally (L27.-)
    • dermatitis of eyelid (H01.1-)
    • diaper dermatitis (L22)
    • eczema of external ear (H60.5-)
    • irritant contact dermatitis (L24.-)
    • perioral dermatitis (L71.0)
    • radiation-related disorders of the skin and subcutaneous tissue (L55-L59)
  • L23.3 Allergic contact dermatitis due to drugs in contact with skin
    • dermatitis due to ingested drugs and medicaments (L27.0-L27.1)
  • L23.6 Allergic contact dermatitis due to food in contact with the skin
    • dermatitis due to ingested food (L27.2)
  • L23.7 Allergic contact dermatitis due to plants, except food
    • allergy NOS due to pollen (J30.1)
  • L24 Irritant contact dermatitis applies to 19 codes
    • allergic contact dermatitis (L23.-)
    • dermatitis due to substances taken internally (L27.-)
    • dermatitis of eyelid (H01.1-)
    • diaper dermatitis (L22)
    • eczema of external ear (H60.5-)
    • perioral dermatitis (L71.0)
    • radiation-related disorders of the skin and subcutaneous tissue (L55-L59)
  • L24.6 Irritant contact dermatitis due to food in contact with skin
    • dermatitis due to ingested food (L27.2)
  • L24.7 Irritant contact dermatitis due to plants, except food
    • allergy NOS to pollen (J30.1)
  • L24.A Irritant contact dermatitis due to friction or contact with body fluids applies to 4 codes
    • erythema intertrigo (L30.4)
  • L25 Unspecified contact dermatitis applies to 8 codes
    • dermatitis due to ingested substances (L27.-)
    • dermatitis of eyelid (H01.1-)
    • eczema of external ear (H60.5-)
    • perioral dermatitis (L71.0)
    • radiation-related disorders of the skin and subcutaneous tissue (L55-L59)
  • L25.1 Unspecified contact dermatitis due to drugs in contact with skin
    • dermatitis due to ingested drugs and medicaments (L27.0-L27.1)
  • L25.4 Unspecified contact dermatitis due to food in contact with skin
    • dermatitis due to ingested food (L27.2)
  • L25.5 Unspecified contact dermatitis due to plants, except food
    • allergy NOS due to pollen (J30.1)
  • L27 Dermatitis due to substances taken internally applies to 5 codes
    • adverse food reaction, except dermatitis (T78.0-T78.1)
    • contact dermatitis (L23-L25)
    • drug photoallergic response (L56.1)
    • drug phototoxic response (L56.0)
    • urticaria (L50.-)
  • L27.2 Dermatitis due to ingested food
  • L30 Other and unspecified dermatitis applies to 8 codes
    • contact dermatitis (L23-L25)
    • dry skin dermatitis (L85.3)
    • small plaque parapsoriasis (L41.3)
    • stasis dermatitis (I87.2)
  • L50.2 Urticaria due to cold and heat
    • familial cold urticaria (M04.2)
  • L60 Nail disorders applies to 8 codes
    • clubbing of nails (R68.3)
    • onychia and paronychia (L03.0-)
  • L70 Acne applies to 8 codes
  • L72.3 Sebaceous cyst
    • pilar cyst (L72.11)
    • trichilemmal (proliferating) cyst (L72.12)
  • L74 Eccrine sweat disorders applies to 13 codes
    • generalized hyperhidrosis (R61)
  • L80 Vitiligo
  • L82 Seborrheic keratosis applies to 2 codes
    • seborrheic dermatitis (L21.-)
  • L85 Other epidermal thickening applies to 6 codes
    • hypertrophic disorders of the skin (L91.-)
  • L89 Pressure ulcer applies to 175 codes
  • L90.0 Lichen sclerosus et atrophicus
    • lichen sclerosus of external female genital organs (N90.4)
    • lichen sclerosus of external male genital organs (N48.0)
  • L90.5 Scar conditions and fibrosis of skin
  • L91.0 Hypertrophic scar
  • L92 Granulomatous disorders of skin and subcutaneous tissue applies to 6 codes
    • actinic granuloma (L57.5)
  • L92.9 Granulomatous disorder of the skin and subcutaneous tissue, unspecified
  • L97 Non-pressure chronic ulcer of lower limb, not elsewhere classified applies to 168 codes
    • pressure ulcer (pressure area) (L89.-)
    • skin infections (L00-L08)
    • specific infections classified to A00-B99
  • L98.0 Pyogenic granuloma
    • pyogenic granuloma of gingiva (K06.8)
    • pyogenic granuloma of maxillary alveolar ridge (K04.5)
    • pyogenic granuloma of oral mucosa (K13.4)
  • L98.4 Non-pressure chronic ulcer of skin, not elsewhere classified applies to 64 codes
  • L98.7 Excessive and redundant skin and subcutaneous tissue
    • acquired excess or redundant skin of eyelid (H02.3-)
    • congenital excess or redundant skin of eyelid (Q10.3)
    • skin changes due to chronic exposure to nonionizing radiation (L57.-)
  • L98.A Non-pressure chronic ulcer of upper limb, not elsewhere classified applies to 72 codes

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 Excludes2 Notes anywhere in the Tabular List, including notes in other chapters.

Questions About Excludes2 Notes

What does an Excludes2 note mean?

An Excludes2 note means “Not included here”: the excluded condition is not part of the condition represented by the code, but a patient may have both conditions at the same time (Section I.A.12.b). The FY 2027 Tabular List has 2,529 of them; 2,493 name other codes, with 2,799 references to 1,779 distinct codes, categories and ranges.

Can both codes be reported when there is an Excludes2 note?

Yes. When an Excludes2 note appears under a code, it is acceptable to use both the code and the excluded code together, when appropriate: that is, when the patient has both conditions and both are documented.

Related References

ICD-10-CM Official GuidelinesICD-10-CM Code LookupICD-10-CM Codes ListCode Lists by Tag

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.