L98.436 Non-pressure chronic ulcer of abdomen with bone involvement without evidence of necrosis

Billable ICD-10-CM code, FY2026. Acts as a Complication or Comorbidity (CC) as a secondary diagnosis.

Applies from 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

Excludes2 (not included here)

• pressure ulcer (pressure area) (L89.-)
• gangrene (I96)
• skin infections (L00-L08)
• specific infections classified to A00-B99
• ulcer of lower limb NEC (L97.-)
• varicose ulcer (I83.0-I83.93)

Risk adjustment (HCC)

• CMS-HCC V28: HCC 380 — Chronic Ulcer of Skin, Except Pressure, Through to Bone or Muscle
• CMS-HCC V22: HCC 161 — Chronic Ulcer of Skin, Except Pressure
• RxHCC V08: HCC 311 — Chronic Ulcer of Skin, Except Pressure
• ESRD V24: HCC 161

MS-DRG index

Defines the logic of DRG(s) 573-575 in MDC 09.

Code annotations containing back-references to L98.436

Back-references to L98.43

• Use Additional: E08.622 Diabetes mellitus due to underlying condition with other skin ulcer ("code to identify site of ulcer (L97.1-L97.9, L98.41-L98.49)")
• Use Additional: E09.622 Drug or chemical induced diabetes mellitus with other skin ulcer ("code to identify site of ulcer (L97.1-L97.9, L98.41-L98.49)")
• Use Additional: E10.622 Type 1 diabetes mellitus with other skin ulcer ("code to identify site of ulcer (L97.1-L97.9, L98.41-L98.49)")
• Use Additional: E11.622 Type 2 diabetes mellitus with other skin ulcer ("code to identify site of ulcer (L97.1-L97.9, L98.41-L98.49)")
• Use Additional: E13.622 Other specified diabetes mellitus with other skin ulcer ("code to identify site of ulcer (L97.1-L97.9, L98.41-L98.49)")

Back-references to L98.4

• Use Additional: T65.84 Toxic effect of xylazine ("non-pressure chronic ulcer of skin, not elsewhere classified (L98.4-)")

Diagnosis Index entries for L98.436

• Ulcer, ulcerated, ulcerating, ulceration, ulcerative › abdomen › with › bone involvement without evidence of necrosis

Nearby codes

• L98.431 Non-pressure chronic ulcer of abdomen limited to breakdown of skin
• L98.432 Non-pressure chronic ulcer of abdomen with fat layer exposed
• L98.433 Non-pressure chronic ulcer of abdomen with necrosis of muscle
• L98.434 Non-pressure chronic ulcer of abdomen with necrosis of bone
• L98.435 Non-pressure chronic ulcer of abdomen with muscle involvement without evidence of necrosis
• L98.436 Non-pressure chronic ulcer of abdomen with bone involvement without evidence of necrosis (this code)
• L98.438 Non-pressure chronic ulcer of abdomen with other specified severity
• L98.439 Non-pressure chronic ulcer of abdomen with unspecified severity
• L98.44 Non-pressure chronic ulcer of chest
• L98.441 Non-pressure chronic ulcer of chest limited to breakdown of skin
• L98.442 Non-pressure chronic ulcer of chest with fat layer exposed