L97.124 — Non-pressure chronic ulcer of left thigh with necrosis of bone

BillableCC

Is L97.124 billable?

Yes — L97.124 is billable for FY2027. L97.124 is a valid, billable ICD-10-CM code at the highest level of specificity in its branch. L97.124 may be submitted for encounters from October 1, 2026 through September 30, 2027.

L97.124 at a glance

Code	L97.124
Description	Non-pressure chronic ulcer of left thigh with necrosis of bone
Billable	Yes
Code set	ICD-10-CM FY2027
Valid for encounters	October 1, 2026 – September 30, 2027

Which MS-DRGs does L97.124 group to?

L97.124 sits in MDC 09 and helps define the logic of 3 MS-DRGs (version 44, FY2027). Which one a stay actually groups to also depends on procedures and secondary diagnoses.

573Skin Graft for Skin Ulcer or Cellulitis with MCCsurgical
574Skin Graft for Skin Ulcer or Cellulitis with CCsurgical
575Skin Graft for Skin Ulcer or Cellulitis without CC/MCCsurgical

As a secondary diagnosis, L97.124 is a complication or comorbidity (CC), which can move a stay into a higher-paying DRG.

How is L97.124 listed in the Alphabetic Index?

These are the routes through the Alphabetic Index that lead to L97.124. They show the wording a clinician may have documented, which often differs from the Tabular description.

Ulcer, ulcerated, ulcerating, ulceration, ulcerative › lower limb › thigh › left › with › bone necrosis

Code first — inherited from L97

The underlying condition below must be sequenced before L97.124. L97.124 describes a manifestation and cannot be the principal or first-listed diagnosis.

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-)

Excludes2 — not included here — inherited from Chapter 12

The conditions below are not part of L97.124, but a patient may have both at the same time. When documentation supports it, L97.124 and the excluded code may both be reported.

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.-)

Excludes2 — not included here — inherited from L97

The conditions below are not part of L97.124, but a patient may have both at the same time. When documentation supports it, L97.124 and the excluded code may both be reported.

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

How long has L97.124 existed?

L97.124 has been in ICD-10-CM since at least FY2016, the earliest fiscal year on record here.

Derived from the official order files for FY2016–FY2026. FY2017 and FY2020 publish no order file, so those years are not covered.