2019 ICD-10-CM Diagnosis Code L03.0

Cellulitis and acute lymphangitis of finger and toe

    2016 2017 2018 2019 Non-Billable/Non-Specific Code
  • L03.0 should not be used for reimbursement purposes as there are multiple codes below it that contain a greater level of detail.
  • The 2019 edition of ICD-10-CM L03.0 became effective on October 1, 2018.
  • This is the American ICD-10-CM version of L03.0 - other international versions of ICD-10 L03.0 may differ.
Applicable To
  • Infection of nail
  • Onychia
  • Paronychia
  • Perionychia
The following code(s) above L03.0 contain annotation back-references
Annotation Back-References
In this context, annotation back-references refer to codes that contain:
  • Applicable To annotations, or
  • Code Also annotations, or
  • Code First annotations, or
  • Excludes1 annotations, or
  • Excludes2 annotations, or
  • Includes annotations, or
  • Note annotations, or
  • Use Additional annotations
that may be applicable to L03.0:
  • L00-L99
    2019 ICD-10-CM Range L00-L99

    Diseases of the skin and subcutaneous tissue

    Type 2 Excludes
    • 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.-)
    Diseases of the skin and subcutaneous tissue
  • L00-L08
    2019 ICD-10-CM Range L00-L08

    Infections of the skin and subcutaneous tissue

    Type 2 Excludes
    • hordeolum (H00.0)
    • infective dermatitis (L30.3)
    • local infections of skin classified in Chapter 1
    • 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.-)
    Use Additional
    • code (B95-B97) to identify infectious agent.
    Infections of the skin and subcutaneous tissue
  • L03
    ICD-10-CM Diagnosis Code L03

    Cellulitis and acute lymphangitis

      2016 2017 2018 2019 Non-Billable/Non-Specific Code
    Type 2 Excludes
    • 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)
    Cellulitis and acute lymphangitis
Clinical Information
  • A disorder characterized by an infectious process involving the nail.
  • A disorder characterized by an infectious process involving the soft tissues around the nail.
  • An acute or chronic infection of the soft tissues around the nail. Symptoms include pain, tenderness, erythema, and swelling around the nail. Acute infection results from minor trauma to the fingertip and staphylococcus aureus is usually the causative agent. Chronic infection is usually caused by candida albicans.
  • An infectious process affecting the nail.
  • An inflammatory reaction involving the folds of the skin surrounding the fingernail. It is characterized by acute or chronic purulent, tender, and painful swellings of the tissues around the nail, caused by an abscess of the nail fold. The pathogenic yeast causing paronychia is most frequently candida albicans. Saprophytic fungi may also be involved. The causative bacteria are usually staphylococcus, pseudomonas aeruginosa, or streptococcus. (andrews' diseases of the skin, 8th ed, p271)
Code History
  • 2016 (effective 10/1/2015): New code (first year of non-draft ICD-10-CM)
  • 2017 (effective 10/1/2016): No change
  • 2018 (effective 10/1/2017): No change
  • 2019 (effective 10/1/2018): No change
Code annotations containing back-references to L03.0:
  • Type 2 Excludes: L60
    ICD-10-CM Diagnosis Code L60

    Nail disorders

      2016 2017 2018 2019 Non-Billable/Non-Specific Code
    Type 2 Excludes
    • clubbing of nails (R68.3)
    • onychia and paronychia (L03.0-)
ICD-10-CM Codes Adjacent To L03.0
L02.821 Furuncle of head [any part, except face]
L02.828 Furuncle of other sites
L02.83 Carbuncle of other sites
L02.831 Carbuncle of head [any part, except face]
L02.838 Carbuncle of other sites
L02.9 Cutaneous abscess, furuncle and carbuncle, unspecified
L02.91 Cutaneous abscess, unspecified
L02.92 Furuncle, unspecified
L02.93 Carbuncle, unspecified
L03 Cellulitis and acute lymphangitis
L03.0 Cellulitis and acute lymphangitis of finger and toe
L03.01 Cellulitis of finger
L03.011 Cellulitis of right finger
L03.012 Cellulitis of left finger
L03.019 Cellulitis of unspecified finger
L03.02 Acute lymphangitis of finger
L03.021 Acute lymphangitis of right finger
L03.022 Acute lymphangitis of left finger
L03.029 Acute lymphangitis of unspecified finger
L03.03 Cellulitis of toe
L03.031 Cellulitis of right toe

Reimbursement claims with a date of service on or after October 1, 2015 require the use of ICD-10-CM codes.