Listing 1.21 Soft Tissue Injury or Abnormality Under Continuing Surgical Management in 2026: The Full Blueprint on Paragraph A Continuing Surgical Management and Paragraph B Major Function Not Restored Within 12 Months for Severe Burns, Crush Injuries, Degloving Injuries, Necrotizing Soft Tissue Infections, and Complex Wound Reconstruction

By Anthony Albert, Benefits Research Director at Disability Exchange. Updated for 2026 claims. This piece continues our Section 1 musculoskeletal listings deep dive. If you have not read our companion pieces on 1.22 lower extremity non-union and 1.23 upper extremity non-union, read those first because 1.21 shares the same 1.00O1 continuing surgical management definition.

Here is the quick version. Listing 1.21 is SSA's Blue Book pathway for a soft tissue injury or abnormality that keeps you under active operative treatment. Not a fracture. Not a joint. Soft tissue: skin, muscle, tendon, ligament, subcutaneous fat, fascia. Think severe burns needing repeat grafting, crush injuries, degloving, gunshot wounds with soft tissue destruction, necrotizing fasciitis after debridement, chronic non-healing wounds under vascular flap reconstruction.

Two paragraphs. Both must be satisfied. Paragraph A requires continuing surgical management. Paragraph B requires that major function of the affected body part was not restored or is not expected to be restored within 12 months of onset. If your reconstruction succeeded fast, you probably don't meet 1.21. If your reconstruction is stretched over a year and function is still lost, you do.

The listing is old-school in one sense. It doesn't care about a specific score or a specific device. It cares about the arc of treatment and the endpoint of function. That makes it flexible, which cuts both ways. Well-documented cases win. Poorly documented ones drown in DDS reviewer subjectivity.

What the 2026 listing actually says (verbatim)

Two prongs joined by "and." Both must be met. Not one or the other. Both. That "and" is the difference between 1.21 and looser listings.

1.00O1: What continuing surgical management means for 1.21

Same definition as 1.22 and 1.23. Continuing surgical management is surgical procedures and any other associated treatments related to efforts directed toward the salvage or restoration of functional use of the affected part. It can include multiple procedures spread over time. Post-operative treatment such as prescribed physical therapy or occupational therapy counts as long as it is part of the treatment plan.

What counts as continuing surgical management for soft tissue cases in 2026:

• Serial debridement of a chronic wound. Ten trips to the OR for washouts in six months is textbook continuing surgical management.
• Staged skin grafting. Meshed split-thickness graft, later full-thickness graft, later scar revision.
• Free tissue transfer with microvascular reconstruction. Latissimus dorsi flap, gracilis flap, anterolateral thigh flap, rectus abdominis flap. Followed by revisions.
• Wound vacuum-assisted closure (V.A.C.) therapy with weekly OR changes.
• Tissue expansion followed by definitive reconstruction.
• Hyperbaric oxygen for radiation-induced soft tissue necrosis under a surgical plan.
• Compartment syndrome release followed by delayed primary closure or grafting.
• Fournier gangrene debridement followed by orchiectomy or genital reconstruction.
• Purpura fulminans debridement with progressive amputation.

1.00S: What "major function of the affected body part not restored" means

1.00S is the operational test for Paragraph B. Major function of the affected body part means, for the upper extremity, the ability to perform fine and gross movements (1.00E4). For the lower extremity, the ability to walk (1.00C5). For the trunk or torso, activities of daily living. For the face, respiration, mastication, deglutition, speech, and vision.

The 12 month rule mirrors the SSA duration standard for all listings. The impairment must have caused loss of major function that has lasted or is expected to last 12 months. That standard is met by either accumulating evidence over time (retrospective) or by a treating physician's opinion that restoration within 12 months of onset is unlikely (prospective).

The exact phrase in the listing is "was not restored or is not expected to be restored." The "was not restored" part covers claims filed at 8 to 12 months post-injury where function is objectively still gone. The "is not expected" part covers claims filed earlier when the trajectory is clear. A patient with 60 percent total body surface area burns two months post-injury is not going to have major function of arms and legs restored by month 12. A treating surgeon's letter carries this argument.

The injuries you will see in these files

Severe thermal burns

Burns are the classic 1.21 diagnosis. American Burn Association criteria for major burn: partial or full thickness greater than 20 percent TBSA in adults, greater than 10 percent TBSA in children or adults over 50, any full thickness burn greater than 5 percent TBSA, high-voltage electrical injury, chemical burn, inhalational injury, burn with concomitant trauma or preexisting medical condition, or burns of the face, hands, feet, genitalia, perineum, or major joints.

Treatment arc: initial resuscitation (Parkland formula: 4 mL x kg x TBSA percent lactated Ringer's over 24 hours, half in first 8 hours), escharotomy, tangential excision of eschar within 3 to 5 days, temporary coverage with allograft or Integra dermal regeneration template or synthetic skin substitutes (StrataGraft FDA-approved 2021), autografting from unburned donor sites, cultured epithelial autografts (Epicel) for extensive burns exceeding 30 percent TBSA. Reconstructive phase: contracture release, Z-plasty, tissue expansion, flap surgery, scar revision, laser resurfacing. Chronic issues: hypertrophic scarring, keloids, contractures across joints, heterotopic ossification, chronic pain, itch, temperature regulation loss, psychological trauma.

Crush injuries and compartment syndrome

High-energy crushing forces (industrial accidents, MVCs, building collapse, prolonged limb entrapment) cause muscle necrosis, rhabdomyolysis with acute kidney injury, compartment pressures greater than 30 mmHg, need for emergent fasciotomy. Late soft tissue reconstruction with muscle flaps or free tissue transfer for extensive soft tissue defects. Nerve injury (Sunderland grade 4 or 5) with slow recovery over 12 to 24 months. Chronic regional pain syndrome type II may develop.

Degloving injuries

Skin and subcutaneous tissue avulsed from underlying fascia, muscle, or bone. Circumferential degloving of hand, foot, or scalp. Morel-Lavallee lesions (closed degloving) require debridement plus definitive reconstruction with primary closure, skin grafting, or flap.

Necrotizing soft tissue infections

Necrotizing fasciitis (type I polymicrobial, type II monomicrobial group A strep, type III Vibrio), Fournier gangrene, gas gangrene from Clostridium perfringens. Serial debridement is mandatory. Mortality 25 to 35 percent. Survivors face months of reconstruction. In 2024 activated protein C studies revived interest in adjunctive treatments. IVIG for streptococcal necrotizing infections.

Complex traumatic wounds

Gunshot wounds with extensive soft tissue destruction. Blast injuries from IEDs (military and civilian). Motor vehicle collisions with rollover and ejection producing large avulsion wounds.

Radiation-induced soft tissue necrosis

Chronic non-healing wounds after therapeutic radiation (head and neck, breast, pelvis). Treated with hyperbaric oxygen (typically 30 to 40 dives at 2.0 to 2.5 ATA) plus surgical debridement and flap reconstruction.

The evidence file SSA needs for 1.21

• ED note or trauma bay documentation of initial injury. Mechanism, extent, TBSA burn diagram, photos.
• ICU or burn unit admission records showing resuscitation, ventilation, surgical timing.
• Operative reports from every debridement, grafting, and reconstructive procedure. Include OR log dates.
• Pathology on debrided tissue where relevant (viability, infection).
• Culture results for infected wounds (organisms, sensitivities, antibiotic regimen).
• Wound care nursing notes with dimensions, depth, undermining, tunneling, exudate character.
• Photography of the wound at intervals (many burn centers photograph weekly).
• Serial dressing change frequency (indicates ongoing wound care intensity).
• Physical therapy notes: range of motion at each affected joint, contracture measurement, functional assessment, splinting.
• Occupational therapy notes: ADL scoring on Barthel or FIM, adaptive equipment, prosthetic fitting if applicable.
• Plastic surgery notes documenting the reconstructive plan (staged, timeline, planned revisions).
• Psychological assessment. PTSD from burns is common. PHQ-9 and PCL-5 scores. Referral to burn survivor support programs.
• Treating surgeon's medical source statement on HA-1152 or attorney template with the specific 1.00S opinion on when major function is expected to be restored.

Worked Example 1: 55 Percent TBSA Burn Under Paragraph A + B

Worked Example 2: Fournier Gangrene With Extensive Reconstruction Under Paragraph A + B

Common file-building mistakes on 1.21 claims

Mistake 1: Filing while still in the acute phase without a plan letter

The first 60 days of a major burn or Fournier case are chaos. Records are thin, plans are day-to-day. If you file too early without a treating surgeon's letter forecasting the reconstructive arc, DDS often denies for insufficient duration. Solution: file at 3 to 6 months when the reconstructive plan is documented, or file earlier with a strong prospective letter.

Mistake 2: Assuming skin healing equals function restored

A burn survivor with a fully epithelialized wound can still have crippling contractures. A Fournier survivor with a healed graft can still have hip abduction contractures and 20-minute sitting tolerance. Major function of the body part is not the same as wound healing. Cite 1.00S and give measurements.

Mistake 3: Missing the psychological documentation

Burn PTSD is well-documented in the literature. Blast injury PTSD is well-documented. Post-necrotizing infection PTSD is well-documented. Getting psychiatry involved and documenting PCL-5 or CAPS-5 scores adds a mental listing (12.15 trauma and stressor-related disorders) as a secondary pathway if 1.21 gets denied.

Mistake 4: Not documenting the "continuing" in continuing surgical management

One surgery is not continuing. Two is barely. Three or more with a documented plan is clearly continuing. If you have had only one procedure, get the surgeon's letter documenting planned revisions before filing.

Mistake 5: Ignoring the 12 month clock

The clock starts at onset of injury, not date of filing. If your burn was 15 months ago and you had one week of surgery and are now fully healed, 1.21 doesn't work. If your burn was 4 months ago and reconstructive surgery is scheduled to continue for another 14 months, 1.21 fits perfectly.

Mistake 6: Overlooking heterotopic ossification after burns

HO develops in 1 to 3 percent of burn survivors, typically at elbows. It causes progressive joint stiffness after apparent healing. Cross-listing under 1.18 abnormality of a major joint may become necessary. Get CT scans to document HO.

SGA and payment picture for 1.21 claimants in 2026

Substantial Gainful Activity in 2026 is $1,620 per month non-blind, $2,700 per month statutorily blind. Burn survivors with facial burns causing visual field loss should route the eye involvement through 2.03 loss of visual efficiency. SSDI benefit amounts range from $1,000 to $4,018 per month in 2026 depending on lifetime earnings. Trial Work Period threshold is $1,110 per month gross.

Impairment-related work expenses for 1.21 claimants: compression garments (Jobst, Bio Concepts, custom fabricated), scar creams, silicone sheeting, sunscreen (required post-burn), specialized cooling clothing, HVAC bills above what workers typically pay, adaptive equipment prescribed by OT, extra transportation for hyperbaric or wound care visits, psychological therapy copays.

How to Build a Winning 1.21 File in 7 Steps

1. Confirm the injury is a soft tissue injury or abnormality. Not a bone fracture (those route to 1.19, 1.22, 1.23). Not a joint problem (those route to 1.18). Soft tissue: skin, muscle, tendon, fat, fascia.
2. Document the continuing surgical management pattern. Collect operative reports for every OR trip and get a treating surgeon's letter forecasting future procedures.
3. Measure major function loss. ROM at every affected joint, ADL scoring (Barthel or FIM), functional assessment by OT.
4. Photograph the wound and scars. Serial photos strengthen the file at hearing.
5. Get psychiatric documentation. PTSD, depression, anxiety after major trauma is expected. PCL-5 or CAPS-5 for PTSD, PHQ-9 for depression, GAD-7 for anxiety.
6. File the application. Reference 1.00O1 continuing surgical management and 1.00S major function language in your allegation.
7. Appeal denials with fresh records. Reconstructive files grow every month. What is borderline at month 6 becomes clear at month 12.

Frequently asked questions about Listing 1.21

Related deep dives on this site

• Listing 1.15 Spinal Nerve Root Compromise
• Listing 1.18 Abnormality of a Major Joint
• Listing 1.19 Pathologic Fractures
• Listing 1.20 Amputation
• Listing 1.22 Non-Healing Lower Extremity Fracture
• Listing 1.23 Non-Healing Upper Extremity Fracture