2017/18 ICD-10-CM Diagnosis Code L98.4

Non-pressure chronic ulcer of skin, not elsewhere classified

Applicable To
  • Chronic ulcer of skin NOS
  • Tropical ulcer NOS
  • Ulcer of skin NOS
Type 2 Excludes
Type 2 Excludes Help
A type 2 excludes note represents "not included here". A type 2 excludes note indicates that the condition excluded is not part of the condition it is excluded from but a patient may have both conditions at the same time. When a type 2 excludes note appears under a code it is acceptable to use both the code (L98.4) and the excluded code together.
  • pressure ulcer (pressure area) (
    ICD-10-CM Diagnosis Code L89
    • L89 Pressure ulcer
      • L89.0 Pressure ulcer of elbow
      • L89.1 Pressure ulcer of back
        • L89.10 Pressure ulcer of unspecified part of back
          • L89.100 Pressure ulcer of unspecified part of back, u...
          • L89.101 Pressure ulcer of unspecified part of back, s...
          • L89.102 Pressure ulcer of unspecified part of back, s...
          • L89.103 Pressure ulcer of unspecified part of back, s...
          • L89.104 Pressure ulcer of unspecified part of back, s...
          • L89.109 Pressure ulcer of unspecified part of back, u...
        • L89.11 Pressure ulcer of right upper back
        • L89.12 Pressure ulcer of left upper back
        • L89.13 Pressure ulcer of right lower back
        • L89.14 Pressure ulcer of left lower back
        • L89.15 Pressure ulcer of sacral region
      • L89.2 Pressure ulcer of hip
      • L89.3 Pressure ulcer of buttock
        • L89.30 Pressure ulcer of unspecified buttock
          • L89.300 Pressure ulcer of unspecified buttock, unstag...
          • L89.301 Pressure ulcer of unspecified buttock, stage ...
          • L89.302 Pressure ulcer of unspecified buttock, stage ...
          • L89.303 Pressure ulcer of unspecified buttock, stage ...
          • L89.304 Pressure ulcer of unspecified buttock, stage ...
          • L89.309 Pressure ulcer of unspecified buttock, unspec...
        • L89.31 Pressure ulcer of right buttock
        • L89.32 Pressure ulcer of left buttock
      • L89.4 Pressure ulcer of contiguous site of back, bu...
        • L89.40 Pressure ulcer of contiguous site of back, bu...
        • L89.41 Pressure ulcer of contiguous site of back, bu...
        • L89.42 Pressure ulcer of contiguous site of back, bu...
        • L89.43 Pressure ulcer of contiguous site of back, bu...
        • L89.44 Pressure ulcer of contiguous site of back, bu...
        • L89.45 Pressure ulcer of contiguous site of back, bu...
      • L89.5 Pressure ulcer of ankle
      • L89.6 Pressure ulcer of heel
      • L89.8 Pressure ulcer of other site
      • L89.9 Pressure ulcer of unspecified site
        • L89.90 Pressure ulcer of unspecified site, unspecifi...
        • L89.91 …… stage 1
        • L89.92 …… stage 2
        • L89.93 …… stage 3
        • L89.94 …… stage 4
        • L89.95 Pressure ulcer of unspecified site, unstageab...
    L89.-
    )
  • gangrene (
    ICD-10-CM Diagnosis Code I96

    Gangrene, not elsewhere classified

      2016 2017 2018 Billable/Specific Code
    Applicable To
    • Gangrenous cellulitis
    Type 1 Excludes
    Type 2 Excludes
    • gangrene in diabetes mellitus (E08-E13 with .52)
    I96
    )
  • skin infections (L00-L08
    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.
    • L00 Staphylococcal scalded skin syndrome
    • L01 Impetigo
    • L02 Cutaneous abscess, furuncle and carbuncl...
    • L03 Cellulitis and acute lymphangitis
    • L04 Acute lymphadenitis
    • L05 Pilonidal cyst and sinus
    • L08 Other local infections of skin and subcu...
    )
  • specific infections classified to A00-B99
    ICD-10-CM Range A00-B99

    Certain infectious and parasitic diseases

    • A00-A09 Intestinal infectious diseases
    • A15-A19 Tuberculosis
    • A20-A28 Certain zoonotic bacterial diseases
    • A30-A49 Other bacterial diseases
    • A50-A64 Infections with a predominantly sexual m...
    • A65-A69 Other spirochetal diseases
    • A70-A74 Other diseases caused by chlamydiae
    • A75-A79 Rickettsioses
    • A80-A89 Viral and prion infections of the centra...
    • A90-A99 Arthropod-borne viral fevers and viral h...
    • B00-B09 Viral infections characterized by skin a...
    • B10-B10 Other human herpesviruses
    • B15-B19 Viral hepatitis
    • B20-B20 Human immunodeficiency virus [HIV] disea...
    • B25-B34 Other viral diseases
    • B35-B49 Mycoses
    • B50-B64 Protozoal diseases
    • B65-B83 Helminthiases
    • B85-B89 Pediculosis, acariasis and other infesta...
    • B90-B94 Sequelae of infectious and parasitic dis...
    • B95-B97 Bacterial and viral infectious agents
    • B99-B99 Other infectious diseases
  • ulcer of lower limb NEC (
    ICD-10-CM Diagnosis Code L97
    • L97 Non-pressure chronic ulcer of lower limb, not...
      • L97.1 Non-pressure chronic ulcer of thigh
        • L97.10 Non-pressure chronic ulcer of unspecified thi...
          • L97.101 Non-pressure chronic ulcer of unspecified thi...
          • L97.102 Non-pressure chronic ulcer of unspecified thi...
          • L97.103 Non-pressure chronic ulcer of unspecified thi...
          • L97.104 Non-pressure chronic ulcer of unspecified thi...
          • L97.105 Non-pressure chronic ulcer of unspecified thi...
          • L97.106 Non-pressure chronic ulcer of unspecified thi...
          • L97.108 Non-pressure chronic ulcer of unspecified thi...
          • L97.109 Non-pressure chronic ulcer of unspecified thi...
        • L97.11 Non-pressure chronic ulcer of right thigh
          • L97.111 Non-pressure chronic ulcer of right thigh lim...
          • L97.112 Non-pressure chronic ulcer of right thigh wit...
          • L97.113 Non-pressure chronic ulcer of right thigh wit...
          • L97.114 Non-pressure chronic ulcer of right thigh wit...
          • L97.115 Non-pressure chronic ulcer of right thigh wit...
          • L97.116 Non-pressure chronic ulcer of right thigh wit...
          • L97.118 Non-pressure chronic ulcer of right thigh wit...
          • L97.119 Non-pressure chronic ulcer of right thigh wit...
        • L97.12 Non-pressure chronic ulcer of left thigh
          • L97.121 Non-pressure chronic ulcer of left thigh limi...
          • L97.122 Non-pressure chronic ulcer of left thigh with...
          • L97.123 Non-pressure chronic ulcer of left thigh with...
          • L97.124 Non-pressure chronic ulcer of left thigh with...
          • L97.125 Non-pressure chronic ulcer of left thigh with...
          • L97.126 Non-pressure chronic ulcer of left thigh with...
          • L97.128 Non-pressure chronic ulcer of left thigh with...
          • L97.129 Non-pressure chronic ulcer of left thigh with...
      • L97.2 Non-pressure chronic ulcer of calf
        • L97.20 Non-pressure chronic ulcer of unspecified cal...
          • L97.201 Non-pressure chronic ulcer of unspecified cal...
          • L97.202 Non-pressure chronic ulcer of unspecified cal...
          • L97.203 Non-pressure chronic ulcer of unspecified cal...
          • L97.204 Non-pressure chronic ulcer of unspecified cal...
          • L97.205 Non-pressure chronic ulcer of unspecified cal...
          • L97.206 Non-pressure chronic ulcer of unspecified cal...
          • L97.208 Non-pressure chronic ulcer of unspecified cal...
          • L97.209 Non-pressure chronic ulcer of unspecified cal...
        • L97.21 Non-pressure chronic ulcer of right calf
          • L97.211 Non-pressure chronic ulcer of right calf limi...
          • L97.212 Non-pressure chronic ulcer of right calf with...
          • L97.213 Non-pressure chronic ulcer of right calf with...
          • L97.214 Non-pressure chronic ulcer of right calf with...
          • L97.215 Non-pressure chronic ulcer of right calf with...
          • L97.216 Non-pressure chronic ulcer of right calf with...
          • L97.218 Non-pressure chronic ulcer of right calf with...
          • L97.219 Non-pressure chronic ulcer of right calf with...
        • L97.22 Non-pressure chronic ulcer of left calf
          • L97.221 Non-pressure chronic ulcer of left calf limit...
          • L97.222 Non-pressure chronic ulcer of left calf with ...
          • L97.223 Non-pressure chronic ulcer of left calf with ...
          • L97.224 Non-pressure chronic ulcer of left calf with ...
          • L97.225 Non-pressure chronic ulcer of left calf with ...
          • L97.226 Non-pressure chronic ulcer of left calf with ...
          • L97.228 Non-pressure chronic ulcer of left calf with ...
          • L97.229 Non-pressure chronic ulcer of left calf with ...
      • L97.3 Non-pressure chronic ulcer of ankle
        • L97.30 Non-pressure chronic ulcer of unspecified ank...
          • L97.301 Non-pressure chronic ulcer of unspecified ank...
          • L97.302 Non-pressure chronic ulcer of unspecified ank...
          • L97.303 Non-pressure chronic ulcer of unspecified ank...
          • L97.304 Non-pressure chronic ulcer of unspecified ank...
          • L97.305 Non-pressure chronic ulcer of unspecified ank...
          • L97.306 Non-pressure chronic ulcer of unspecified ank...
          • L97.308 Non-pressure chronic ulcer of unspecified ank...
          • L97.309 Non-pressure chronic ulcer of unspecified ank...
        • L97.31 Non-pressure chronic ulcer of right ankle
          • L97.311 Non-pressure chronic ulcer of right ankle lim...
          • L97.312 Non-pressure chronic ulcer of right ankle wit...
          • L97.313 Non-pressure chronic ulcer of right ankle wit...
          • L97.314 Non-pressure chronic ulcer of right ankle wit...
          • L97.315 Non-pressure chronic ulcer of right ankle wit...
          • L97.316 Non-pressure chronic ulcer of right ankle wit...
          • L97.318 Non-pressure chronic ulcer of right ankle wit...
          • L97.319 Non-pressure chronic ulcer of right ankle wit...
        • L97.32 Non-pressure chronic ulcer of left ankle
          • L97.321 Non-pressure chronic ulcer of left ankle limi...
          • L97.322 Non-pressure chronic ulcer of left ankle with...
          • L97.323 Non-pressure chronic ulcer of left ankle with...
          • L97.324 Non-pressure chronic ulcer of left ankle with...
          • L97.325 Non-pressure chronic ulcer of left ankle with...
          • L97.326 Non-pressure chronic ulcer of left ankle with...
          • L97.328 Non-pressure chronic ulcer of left ankle with...
          • L97.329 Non-pressure chronic ulcer of left ankle with...
      • L97.4 Non-pressure chronic ulcer of heel and midfoo...
        • L97.40 Non-pressure chronic ulcer of unspecified hee...
          • L97.401 Non-pressure chronic ulcer of unspecified hee...
          • L97.402 Non-pressure chronic ulcer of unspecified hee...
          • L97.403 Non-pressure chronic ulcer of unspecified hee...
          • L97.404 Non-pressure chronic ulcer of unspecified hee...
          • L97.405 Non-pressure chronic ulcer of unspecified hee...
          • L97.406 Non-pressure chronic ulcer of unspecified hee...
          • L97.408 Non-pressure chronic ulcer of unspecified hee...
          • L97.409 Non-pressure chronic ulcer of unspecified hee...
        • L97.41 Non-pressure chronic ulcer of right heel and ...
          • L97.411 Non-pressure chronic ulcer of right heel and ...
          • L97.412 Non-pressure chronic ulcer of right heel and ...
          • L97.413 Non-pressure chronic ulcer of right heel and ...
          • L97.414 Non-pressure chronic ulcer of right heel and ...
          • L97.415 Non-pressure chronic ulcer of right heel and ...
          • L97.416 Non-pressure chronic ulcer of right heel and ...
          • L97.418 Non-pressure chronic ulcer of right heel and ...
          • L97.419 Non-pressure chronic ulcer of right heel and ...
        • L97.42 Non-pressure chronic ulcer of left heel and m...
          • L97.421 Non-pressure chronic ulcer of left heel and m...
          • L97.422 Non-pressure chronic ulcer of left heel and m...
          • L97.423 Non-pressure chronic ulcer of left heel and m...
          • L97.424 Non-pressure chronic ulcer of left heel and m...
          • L97.425 Non-pressure chronic ulcer of left heel and m...
          • L97.426 Non-pressure chronic ulcer of left heel and m...
          • L97.428 Non-pressure chronic ulcer of left heel and m...
          • L97.429 Non-pressure chronic ulcer of left heel and m...
      • L97.5 Non-pressure chronic ulcer of other part of f...
        • L97.50 Non-pressure chronic ulcer of other part of u...
          • L97.501 Non-pressure chronic ulcer of other part of u...
          • L97.502 Non-pressure chronic ulcer of other part of u...
          • L97.503 Non-pressure chronic ulcer of other part of u...
          • L97.504 Non-pressure chronic ulcer of other part of u...
          • L97.505 Non-pressure chronic ulcer of other part of u...
          • L97.506 Non-pressure chronic ulcer of other part of u...
          • L97.508 Non-pressure chronic ulcer of other part of u...
          • L97.509 Non-pressure chronic ulcer of other part of u...
        • L97.51 Non-pressure chronic ulcer of other part of r...
          • L97.511 Non-pressure chronic ulcer of other part of r...
          • L97.512 Non-pressure chronic ulcer of other part of r...
          • L97.513 Non-pressure chronic ulcer of other part of r...
          • L97.514 Non-pressure chronic ulcer of other part of r...
          • L97.515 Non-pressure chronic ulcer of other part of r...
          • L97.516 Non-pressure chronic ulcer of other part of r...
          • L97.518 Non-pressure chronic ulcer of other part of r...
          • L97.519 Non-pressure chronic ulcer of other part of r...
        • L97.52 Non-pressure chronic ulcer of other part of l...
          • L97.521 Non-pressure chronic ulcer of other part of l...
          • L97.522 Non-pressure chronic ulcer of other part of l...
          • L97.523 Non-pressure chronic ulcer of other part of l...
          • L97.524 Non-pressure chronic ulcer of other part of l...
          • L97.525 Non-pressure chronic ulcer of other part of l...
          • L97.526 Non-pressure chronic ulcer of other part of l...
          • L97.528 Non-pressure chronic ulcer of other part of l...
          • L97.529 Non-pressure chronic ulcer of other part of l...
      • L97.8 Non-pressure chronic ulcer of other part of l...
        • L97.80 Non-pressure chronic ulcer of other part of u...
          • L97.801 Non-pressure chronic ulcer of other part of u...
          • L97.802 Non-pressure chronic ulcer of other part of u...
          • L97.803 Non-pressure chronic ulcer of other part of u...
          • L97.804 Non-pressure chronic ulcer of other part of u...
          • L97.805 Non-pressure chronic ulcer of other part of u...
          • L97.806 Non-pressure chronic ulcer of other part of u...
          • L97.808 Non-pressure chronic ulcer of other part of u...
          • L97.809 Non-pressure chronic ulcer of other part of u...
        • L97.81 Non-pressure chronic ulcer of other part of r...
          • L97.811 Non-pressure chronic ulcer of other part of r...
          • L97.812 Non-pressure chronic ulcer of other part of r...
          • L97.813 Non-pressure chronic ulcer of other part of r...
          • L97.814 Non-pressure chronic ulcer of other part of r...
          • L97.815 Non-pressure chronic ulcer of other part of r...
          • L97.816 Non-pressure chronic ulcer of other part of r...
          • L97.818 Non-pressure chronic ulcer of other part of r...
          • L97.819 Non-pressure chronic ulcer of other part of r...
        • L97.82 Non-pressure chronic ulcer of other part of l...
          • L97.821 Non-pressure chronic ulcer of other part of l...
          • L97.822 Non-pressure chronic ulcer of other part of l...
          • L97.823 Non-pressure chronic ulcer of other part of l...
          • L97.824 Non-pressure chronic ulcer of other part of l...
          • L97.825 Non-pressure chronic ulcer of other part of l...
          • L97.826 Non-pressure chronic ulcer of other part of l...
          • L97.828 Non-pressure chronic ulcer of other part of l...
          • L97.829 Non-pressure chronic ulcer of other part of l...
      • L97.9 Non-pressure chronic ulcer of unspecified par...
        • L97.90 Non-pressure chronic ulcer of unspecified par...
          • L97.901 Non-pressure chronic ulcer of unspecified par...
          • L97.902 Non-pressure chronic ulcer of unspecified par...
          • L97.903 Non-pressure chronic ulcer of unspecified par...
          • L97.904 Non-pressure chronic ulcer of unspecified par...
          • L97.905 Non-pressure chronic ulcer of unspecified par...
          • L97.906 Non-pressure chronic ulcer of unspecified par...
          • L97.908 Non-pressure chronic ulcer of unspecified par...
          • L97.909 Non-pressure chronic ulcer of unspecified par...
        • L97.91 Non-pressure chronic ulcer of unspecified par...
          • L97.911 Non-pressure chronic ulcer of unspecified par...
          • L97.912 Non-pressure chronic ulcer of unspecified par...
          • L97.913 Non-pressure chronic ulcer of unspecified par...
          • L97.914 Non-pressure chronic ulcer of unspecified par...
          • L97.915 Non-pressure chronic ulcer of unspecified par...
          • L97.916 Non-pressure chronic ulcer of unspecified par...
          • L97.918 Non-pressure chronic ulcer of unspecified par...
          • L97.919 Non-pressure chronic ulcer of unspecified par...
        • L97.92 Non-pressure chronic ulcer of unspecified par...
          • L97.921 Non-pressure chronic ulcer of unspecified par...
          • L97.922 Non-pressure chronic ulcer of unspecified par...
          • L97.923 Non-pressure chronic ulcer of unspecified par...
          • L97.924 Non-pressure chronic ulcer of unspecified par...
          • L97.925 Non-pressure chronic ulcer of unspecified par...
          • L97.926 Non-pressure chronic ulcer of unspecified par...
          • L97.928 Non-pressure chronic ulcer of unspecified par...
          • L97.929 Non-pressure chronic ulcer of unspecified par...
    L97.-
    )
  • varicose ulcer (
    ICD-10-CM Diagnosis Code I83.0

    Varicose veins of lower extremities with ulcer

      2016 2017 2018 Non-Billable/Non-Specific Code
    Use Additional
    • code to identify severity of ulcer (L97.-)
    I83.0-
    ICD-10-CM Diagnosis Code I82.2

    Embolism and thrombosis of vena cava and other thoracic veins

      2016 2017 2018 Non-Billable/Non-Specific Code
    I82.2
    )
The following code(s) above L98.4 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 L98.4:
  • L00-L99
    2018 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
Clinical Information Code History
ICD-10-CM Codes Adjacent To L98.4
L97.924 …… with necrosis of bone
L97.925 …… with muscle involvement without evidence of necrosis
L97.926 …… with bone involvement without evidence of necrosis
L97.928 …… with other specified severity
L97.929 …… with unspecified severity
L98 Other disorders of skin and subcutaneous tissue, not elsewhere classified
L98.0 Pyogenic granuloma
L98.1 Factitial dermatitis
L98.2 Febrile neutrophilic dermatosis [Sweet]
L98.3 Eosinophilic cellulitis [Wells]
L98.4 Non-pressure chronic ulcer of skin, not elsewhere classified
L98.41 Non-pressure chronic ulcer of buttock
L98.411 …… limited to breakdown of skin
L98.412 …… with fat layer exposed
L98.413 …… with necrosis of muscle
L98.414 …… with necrosis of bone
L98.415 …… with muscle involvement without evidence of necrosis
L98.416 …… with bone involvement without evidence of necrosis
L98.418 …… with other specified severity
L98.419 …… with unspecified severity
L98.42 Non-pressure chronic ulcer of back

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