2021 ICD-10-CM Diagnosis Code L73.2

Hidradenitis suppurativa

    2016 2017 2018 2019 2020 2021 Billable/Specific Code
  • L73.2 is a billable/specific ICD-10-CM code that can be used to indicate a diagnosis for reimbursement purposes.
  • The 2021 edition of ICD-10-CM L73.2 became effective on October 1, 2020.
  • This is the American ICD-10-CM version of L73.2 - other international versions of ICD-10 L73.2 may differ.
The following code(s) above L73.2 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 L73.2:
  • L00-L99
    2021 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
  • L60-L75
    2021 ICD-10-CM Range L60-L75

    Disorders of skin appendages

    Type 1 Excludes
    • congenital malformations of integument (Q84.-)
    Disorders of skin appendages
Approximate Synonyms
  • Hidradenitis
Clinical Information
  • A chronic suppurative and cicatricial disease of the apocrine glands occurring chiefly in the axillae in women and in the groin and anal regions in men. It is characterized by poral occlusion with secondary bacterial infection, evolving into abscesses which eventually rupture. As the disease becomes chronic, ulcers appear, sinus tracts enlarge, fistulas develop, and fibrosis and scarring become evident.
  • Hidradenitis suppurativa (hs) is a chronic disease of a type of sweat gland. It can occur in one or multiple areas of your body. Hs usually develops in your armpits, groin and anal area. It causes long-term skin inflammation and can be painful. Symptoms include
    • blackheads and red, tender bumps, called abscesses. The abscesses get bigger, break open and leak pus
    • tunnels that form under the skin between abscesses
    • scarring
    no one knows what causes hs. It is more common in women, african-americans and people who have had acne. It usually starts after the teenage years. Treatments include antibiotics, anti-inflammatory medicines and sometimes surgery. Losing weight and wearing loose clothing can help, too.
ICD-10-CM L73.2 is grouped within Diagnostic Related Group(s) (MS-DRG v38.0):
  • 606 Minor skin disorders with mcc
  • 607 Minor skin disorders without mcc

Convert L73.2 to ICD-9-CM

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
  • 2020 (effective 10/1/2019): No change
  • 2021 (effective 10/1/2020): No change
Code annotations containing back-references to L73.2:
  • Type 1 Excludes: L75
    ICD-10-CM Diagnosis Code L75

    Apocrine sweat disorders

      2016 2017 2018 2019 2020 2021 Non-Billable/Non-Specific Code
    Type 1 Excludes
    • dyshidrosis (L30.1)
    • hidradenitis suppurativa (L73.2)

Diagnosis Index entries containing back-references to L73.2:
  • Disease, diseased - see also Syndrome
    • Pollitzer's L73.2 (hidradenitis suppurativa)
  • Hidradenitis L73.2 (axillaris) (suppurative)
  • Hydradenitis L73.2 (axillaris) (suppurative)
  • Hydroadenitis L73.2 (axillaris) (suppurative)
  • Hydrosadenitis L73.2 (axillaris) (suppurative)
  • Pollitzer's disease L73.2

ICD-10-CM Codes Adjacent To L73.2
L72.1 Pilar and trichodermal cyst
L72.11 Pilar cyst
L72.12 Trichodermal cyst
L72.2 Steatocystoma multiplex
L72.3 Sebaceous cyst
L72.8 Other follicular cysts of the skin and subcutaneous tissue
L72.9 Follicular cyst of the skin and subcutaneous tissue, unspecified
L73 Other follicular disorders
L73.0 Acne keloid
L73.1 Pseudofolliculitis barbae
L73.2 Hidradenitis suppurativa
L73.8 Other specified follicular disorders
L73.9 Follicular disorder, unspecified
L74 Eccrine sweat disorders
L74.0 Miliaria rubra
L74.1 Miliaria crystallina
L74.2 Miliaria profunda
L74.3 Miliaria, unspecified
L74.4 Anhidrosis
L74.5 Focal hyperhidrosis
L74.51 Primary focal hyperhidrosis

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