L97.213CurrentBillable / specific

Non-pressure chronic ulcer of right calf with necrosis of muscle

L97 · Inherited instructions

Code first

any associated underlying condition, such as:
any associated gangrene (I96)
atherosclerosis of the lower extremities (I70.23-, I70.24-, I70.33-, I70.34-, I70.43-, I70.44-, I70.53-, I70.54-, I70.63-, I70.64-, I70.73-, I70.74-)
chronic venous hypertension (I87.31-, I87.33-)
diabetic ulcers (E08.621, E08.622, E09.621, E09.622, E10.621, E10.622, E11.621, E11.622, E13.621, E13.622)
postphlebitic syndrome (I87.01-, I87.03-)
postthrombotic syndrome (I87.01-, I87.03-)
varicose ulcer (I83.0-, I83.2-)

Excludes 2 · 13

L97 · Non-pressure chronic ulcer of lower limb, not elsewhere classified

Excludes 2

pressure ulcer (pressure area) (L89.-)
skin infections (L00-L08)
specific infections classified to A00-B99

Chapters 12 · Diseases of the skin and subcutaneous tissue (L00-L99)

Excludes 2

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.-)

Claims & coverage

Coverage depends on the payer, service and applicable policy. A billable code does not guarantee payment.

When ICD-10-CM is required

For US diagnosis claims covered by HIPAA, ICD-10-CM is required from October 1, 2015.

Use the service date for outpatient/professional claims and the discharge date for hospital inpatient claims. Earlier encounters use ICD-9-CM; each individual code must also be valid for the applicable date.

Official coding guidelines → · CMS ↗

MS-DRG · 43.1 · 573, 574, 575, 592, 593, 594

Grouping depends on the complete encounter and CMS grouper logic.

573 · Skin Graft for Skin Ulcer or Cellulitis with MCC
574 · Skin Graft for Skin Ulcer or Cellulitis with CC
575 · Skin Graft for Skin Ulcer or Cellulitis without CC/MCC
592 · Skin Ulcers with MCC
593 · Skin Ulcers with CC
594 · Skin Ulcers without CC/MCC

2026-04-01 – 2026-09-30

CMS · MS-DRG 43.1

Check Medicare coverage ↗

First observed · 2015-10-01

Code history

Latest recorded change · FY2026

ChangedUnchanged

FY2026

Effective from 2025-10-01

Inherited rules changed

Non-pressure chronic ulcer of right calf with necrosis of muscle

Billable diagnosis code

CDC/NCHS · FY2026

All editions (19)

All editions	Effective from	Code history
FY2016	2015-10-01	First observed
FY2017	2016-10-01	No tabular change
FY2018	2017-10-01	No tabular change
FY2019	2018-10-01	No tabular change
FY2020	2019-10-01	No tabular change
FY2020 · April	2020-04-01	No tabular change
FY2021	2020-10-01	No tabular change
FY2021 · 01-01	2021-01-01	No tabular change
FY2022	2021-10-01	No tabular change
FY2022 · 04-01	2022-04-01	No tabular change
FY2023	2022-10-01	No tabular change
FY2023 · 04-01	2023-04-01	No tabular change
FY2024	2023-10-01	No tabular change
FY2024 · 04-01	2024-04-01	No tabular change
FY2025	2024-10-01	No tabular change
FY2025 · 04-01	2025-04-01	No tabular change
FY2026	2025-10-01	Inherited rules changed
FY2026 · April	2026-04-01	No tabular change
FY2027	2026-10-01	No tabular change

Historical ICD-9 mappings · 2018

Historical mapping only; not an automatic code substitution.

707.12 · Approximate

CDC/NCHS · GEM 2018

Code-level instructions

The official Tabular List has no additional instructions at this code level.

Review the instructions inherited from its parent categories below. Inherited instructions ↓

Review the official coding guidelines ↗

Inherited instructions

L97 · Non-pressure chronic ulcer of lower limb, not elsewhere classified

Includes

chronic ulcer of skin of lower limb NOS
non-healing ulcer of skin
non-infected sinus of skin
trophic ulcer NOS
tropical ulcer NOS
ulcer of skin of lower limb NOS

Excludes 2

pressure ulcer (pressure area) (L89.-)
skin infections (L00-L08)
specific infections classified to A00-B99

Code first

any associated underlying condition, such as:
any associated gangrene (I96)
atherosclerosis of the lower extremities (I70.23-, I70.24-, I70.33-, I70.34-, I70.43-, I70.44-, I70.53-, I70.54-, I70.63-, I70.64-, I70.73-, I70.74-)
chronic venous hypertension (I87.31-, I87.33-)
diabetic ulcers (E08.621, E08.622, E09.621, E09.622, E10.621, E10.622, E11.621, E11.622, E13.621, E13.622)
postphlebitic syndrome (I87.01-, I87.03-)
postthrombotic syndrome (I87.01-, I87.03-)
varicose ulcer (I83.0-, I83.2-)

Chapters 12 · Diseases of the skin and subcutaneous tissue (L00-L99)

Excludes 2

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.-)

L97.2 · Non-pressure chronic ulcer of calf

Includes

Non-pressure chronic ulcer of shin

Official index references (1)

Ulcer, ulcerated, ulcerating, ulceration, ulcerative (1)

Ulcer, ulcerated, ulcerating, ulceration, ulcerative › lower limb(atrophic) (chronic) (neurogenic) (perforating) (pyogenic) (trophic) (tropical) › calf › right › with › muscle necrosisDisease index

Related codes

Other entries in the same category; these are not automatic substitutes.

Code	Description	Category · further specificity required
L97.211	Non-pressure chronic ulcer of right calf limited to breakdown of skin	Billable / specific
L97.212	Non-pressure chronic ulcer of right calf with fat layer exposed	Billable / specific
L97.214	Non-pressure chronic ulcer of right calf with necrosis of bone	Billable / specific
L97.215	Non-pressure chronic ulcer of right calf with muscle involvement without evidence of necrosis	Billable / specific
L97.216	Non-pressure chronic ulcer of right calf with bone involvement without evidence of necrosis	Billable / specific
L97.218	Non-pressure chronic ulcer of right calf with other specified severity	Billable / specific
L97.219	Non-pressure chronic ulcer of right calf with unspecified severity	Billable / specific

Official titles and instructions are preserved in their source language. Official sources ↗

L97.213CurrentBillable / specific

Non-pressure chronic ulcer of right calf with necrosis of muscle

L97 · Inherited instructions

Code first

any associated underlying condition, such as:
any associated gangrene (I96)
atherosclerosis of the lower extremities (I70.23-, I70.24-, I70.33-, I70.34-, I70.43-, I70.44-, I70.53-, I70.54-, I70.63-, I70.64-, I70.73-, I70.74-)
chronic venous hypertension (I87.31-, I87.33-)
diabetic ulcers (E08.621, E08.622, E09.621, E09.622, E10.621, E10.622, E11.621, E11.622, E13.621, E13.622)
postphlebitic syndrome (I87.01-, I87.03-)
postthrombotic syndrome (I87.01-, I87.03-)
varicose ulcer (I83.0-, I83.2-)

Excludes 2 · 13

L97 · Non-pressure chronic ulcer of lower limb, not elsewhere classified

Excludes 2

pressure ulcer (pressure area) (L89.-)
skin infections (L00-L08)
specific infections classified to A00-B99

Chapters 12 · Diseases of the skin and subcutaneous tissue (L00-L99)

Excludes 2

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.-)

Claims & coverage

Coverage depends on the payer, service and applicable policy. A billable code does not guarantee payment.

When ICD-10-CM is required

For US diagnosis claims covered by HIPAA, ICD-10-CM is required from October 1, 2015.

Official coding guidelines → · CMS ↗

MS-DRG · 43.1 · 573, 574, 575, 592, 593, 594

Grouping depends on the complete encounter and CMS grouper logic.

573 · Skin Graft for Skin Ulcer or Cellulitis with MCC
574 · Skin Graft for Skin Ulcer or Cellulitis with CC
575 · Skin Graft for Skin Ulcer or Cellulitis without CC/MCC
592 · Skin Ulcers with MCC
593 · Skin Ulcers with CC
594 · Skin Ulcers without CC/MCC

2026-04-01 – 2026-09-30

CMS · MS-DRG 43.1

Check Medicare coverage ↗

First observed · 2015-10-01

Code history

Latest recorded change · FY2026

ChangedUnchanged

FY2026

Effective from 2025-10-01

Inherited rules changed

Non-pressure chronic ulcer of right calf with necrosis of muscle

Billable diagnosis code

CDC/NCHS · FY2026

All editions (19)

All editions	Effective from	Code history
FY2016	2015-10-01	First observed
FY2017	2016-10-01	No tabular change
FY2018	2017-10-01	No tabular change
FY2019	2018-10-01	No tabular change
FY2020	2019-10-01	No tabular change
FY2020 · April	2020-04-01	No tabular change
FY2021	2020-10-01	No tabular change
FY2021 · 01-01	2021-01-01	No tabular change
FY2022	2021-10-01	No tabular change
FY2022 · 04-01	2022-04-01	No tabular change
FY2023	2022-10-01	No tabular change
FY2023 · 04-01	2023-04-01	No tabular change
FY2024	2023-10-01	No tabular change
FY2024 · 04-01	2024-04-01	No tabular change
FY2025	2024-10-01	No tabular change
FY2025 · 04-01	2025-04-01	No tabular change
FY2026	2025-10-01	Inherited rules changed
FY2026 · April	2026-04-01	No tabular change
FY2027	2026-10-01	No tabular change

Historical ICD-9 mappings · 2018

Historical mapping only; not an automatic code substitution.

707.12 · Approximate

CDC/NCHS · GEM 2018

Code-level instructions

The official Tabular List has no additional instructions at this code level.

Review the instructions inherited from its parent categories below. Inherited instructions ↓

Review the official coding guidelines ↗

Inherited instructions

L97 · Non-pressure chronic ulcer of lower limb, not elsewhere classified

Includes

chronic ulcer of skin of lower limb NOS
non-healing ulcer of skin
non-infected sinus of skin
trophic ulcer NOS
tropical ulcer NOS
ulcer of skin of lower limb NOS

Excludes 2

pressure ulcer (pressure area) (L89.-)
skin infections (L00-L08)
specific infections classified to A00-B99

Code first

any associated underlying condition, such as:
any associated gangrene (I96)
atherosclerosis of the lower extremities (I70.23-, I70.24-, I70.33-, I70.34-, I70.43-, I70.44-, I70.53-, I70.54-, I70.63-, I70.64-, I70.73-, I70.74-)
chronic venous hypertension (I87.31-, I87.33-)
diabetic ulcers (E08.621, E08.622, E09.621, E09.622, E10.621, E10.622, E11.621, E11.622, E13.621, E13.622)
postphlebitic syndrome (I87.01-, I87.03-)
postthrombotic syndrome (I87.01-, I87.03-)
varicose ulcer (I83.0-, I83.2-)

Chapters 12 · Diseases of the skin and subcutaneous tissue (L00-L99)

Excludes 2

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.-)

L97.2 · Non-pressure chronic ulcer of calf

Includes

Non-pressure chronic ulcer of shin

Official index references (1)

Ulcer, ulcerated, ulcerating, ulceration, ulcerative (1)

Ulcer, ulcerated, ulcerating, ulceration, ulcerative › lower limb(atrophic) (chronic) (neurogenic) (perforating) (pyogenic) (trophic) (tropical) › calf › right › with › muscle necrosisDisease index

Related codes

Other entries in the same category; these are not automatic substitutes.

Code	Description	Category · further specificity required
L97.211	Non-pressure chronic ulcer of right calf limited to breakdown of skin	Billable / specific
L97.212	Non-pressure chronic ulcer of right calf with fat layer exposed	Billable / specific
L97.214	Non-pressure chronic ulcer of right calf with necrosis of bone	Billable / specific
L97.215	Non-pressure chronic ulcer of right calf with muscle involvement without evidence of necrosis	Billable / specific
L97.216	Non-pressure chronic ulcer of right calf with bone involvement without evidence of necrosis	Billable / specific
L97.218	Non-pressure chronic ulcer of right calf with other specified severity	Billable / specific
L97.219	Non-pressure chronic ulcer of right calf with unspecified severity	Billable / specific

Official titles and instructions are preserved in their source language. Official sources ↗