ICD-10 code S06.344S: Traumatic hemorrhage of right cerebrum, sequela

Key takeaways

S06.344S is a billable ICD-10-CM code valid for fiscal year 2026, describing traumatic hemorrhage of the right cerebrum with 6-24 hours of loss of consciousness, sequela

The 7th character S designates sequela (late effect) – use it only after the active injury phase is complete and the patient presents for management of a residual condition

S06.344 (the parent code) is non-billable; coders must always append 7th character A, D, or S to bill a claim

Pabau’s claims management software helps practices track ICD-10-CM code validity and documentation requirements across the full patient care continuum

ICD-10 code S06.344S is a billable code for traumatic hemorrhage of the right cerebrum, with loss of consciousness of 6 to 24 hours, sequela. It applies once the acute brain injury has resolved. The patient then returns for a residual condition – headaches, cognitive changes, or neurological deficits – that traces back to the original hemorrhage.

This reference covers ICD-10 code S06.344S in full. That means its clinical description, billable status, code hierarchy, 7th character rules, sibling codes, and the documentation a physician note needs.

ICD-10 code S06.344S: Definition and clinical description

S06.344S describes traumatic hemorrhage of the right cerebrum with loss of consciousness of 6 hours to 24 hours, sequela. It falls under ICD-10-CM Chapter 19 (Injury, poisoning, and certain other consequences of external causes), within the S00-S09 series for injuries to the head.

Clinically, this code applies to two documented synonyms: Traumatic intracerebral hemorrhage involving the right cerebrum, and traumatic intracerebral hematoma of the right cerebrum. The 6-to-24-hour loss of consciousness window is a specific axis of the code. It is distinct from shorter LOC durations (under 6 hours) and longer durations (over 24 hours). Laterality is the other critical axis: This code applies to the right cerebrum only.

ICD-10-CM code hierarchy for S06.344S

Understanding where S06.344S sits in the ICD-10-CM hierarchy helps coders navigate the broader S06 family and avoid selecting a non-billable parent code by mistake. The full parent-to-child path is:

• S00-T88 – Injury, poisoning, and certain other consequences of external causes
• S00-S09 – Injuries to the head
• S06 – Intracranial injury (includes traumatic brain injury)
• S06.3 – Focal traumatic brain injury
• S06.34 – Traumatic hemorrhage of right cerebrum
• S06.344 – Traumatic hemorrhage of right cerebrum with loss of consciousness of 6 hours to 24 hours (non-billable)
• S06.344S – Traumatic hemorrhage of right cerebrum with loss of consciousness of 6 hours to 24 hours, sequela (billable)

S06.344 without a 7th character is not billable. Claims submitted under the parent code will reject. Always assign one of the three 7th character extensions: A (initial encounter), D (subsequent encounter), or S (sequela).

The CDC/NCHS ICD-10-CM web tool allows coders to verify current-year validity and navigate the full tabular list hierarchy for any S06 code. Confirm S06.344S status annually, as ICD-10-CM updates take effect each October 1.

Understanding the 7th character: A, D, and S for traumatic brain injury ICD-10

Category S06 requires a 7th character on every code. Selecting the wrong one is one of the most common denial triggers in traumatic brain injury ICD-10 billing. The three options for S06.344 are:

What “sequela” means in ICD-10-CM coding

Sequela (7th character S) is a late effect. The original traumatic hemorrhage has resolved or stabilized. The patient now has a residual condition caused by it: Post-traumatic cognitive impairment, persistent headaches, memory deficits, or neurological changes. According to CMS ICD-10-CM coding guidelines, there is no time limit on when a sequela code can be used.

Two codes are typically required when reporting a sequela. The sequela code (S06.344S) identifies the original injury. A second code describes the residual condition – for example, a code from category G93 for brain disorders, or G89 for pain. The residual condition code is sequenced first, as the principal diagnosis, and S06.344S follows as the secondary code that establishes the causative injury.

The key distinction between D and S: code D (subsequent encounter) applies when the injury is still being treated and is not yet resolved. Code S applies when the injury is healed or stable and the visit is for management of what it left behind. Misapplying D to a sequela visit is the most common encounter-designation error in post-TBI patient care management.

Sibling and related codes for S06.344S

Coders working with S06.344S should be familiar with the surrounding code family. The AAPC ICD-10-CM lookup allows full navigation of the S06.34 series alongside adjacent traumatic hemorrhage codes.

Laterality is critical in this series. S06.344S applies to the right cerebrum only. Left-cerebrum hemorrhage with the same LOC duration and sequela designation uses S06.354S. Selecting the wrong laterality code is a straightforward documentation mismatch that payers will flag on audit.

Coding guidelines and sequela ICD-10 7th character rules for S06.344S

ICD-10-CM Official Guidelines for Coding and Reporting, Chapter 19, govern how S06 codes are assigned. The key instructional notes for this category affect every coder using S06.344S.

Additional codes to report

Category S06 carries two “use additional code” instructions that apply when associated conditions are documented. Both are optional, not mandatory, but should be reported when present:

• Open wound of head (S01.-) – report if the TBI occurred alongside a documented open head wound
• Skull fracture (S02.-) – report if a skull fracture was documented at the time of the original injury or is part of the sequela presentation

For sequela visits specifically, also add a second code for the residual condition. The ICD List coding reference tool shows common sequela pairings for S06 codes, including neurological deficit and cognitive impairment codes frequently reported alongside S06.344S.

Excludes notes

Category S06 does not apply to head injury NOS (S09.90). Non-traumatic intracranial hemorrhage, such as spontaneous subarachnoid or intracerebral hemorrhage from hypertensive disease, is coded differently. It falls under Chapter 9 (Diseases of the circulatory system), not S06. Confirm the hemorrhage is traumatic before assigning S06.344S.

Documentation requirements for traumatic brain injury ICD-10 sequela coding

This is where competitor coding references fall short. Listing a code description is straightforward; explaining what the physician note must contain to support that code is where billing teams actually need help. For S06.344S specifically, clinical documentation must satisfy four requirements simultaneously.

Four documentation requirements for S06.344S

• Right cerebrum specified – the physician note must identify the hemorrhage as involving the right cerebrum or right hemisphere. “Cerebral hemorrhage” without laterality cannot support this code. If imaging was the source, the radiology report should be referenced or co-signed.
• Loss of consciousness duration documented – the note must state that LOC lasted 6 hours to 24 hours. This may come from the original admission record, emergency notes, or a neurology consult. For sequela visits, the original LOC duration should be documented in the history of present illness as part of establishing the causal relationship.
• Traumatic mechanism confirmed – the cause of the hemorrhage must be trauma (fall, motor vehicle accident, assault, etc.). Spontaneous hemorrhage of any etiology is excluded from S06.
• Sequela status established – the provider must document that the original injury has resolved and the current encounter is for a residual condition caused by that injury. This is the piece most often missing. A note that says “patient with history of TBI, presenting with headaches” is not sufficient without explicitly linking the headache to the prior traumatic hemorrhage as a sequela.

Practices managing HIPAA-compliant documentation workflows for TBI sequela patients benefit from structured clinical note templates. These templates prompt providers to address each of the four elements at every sequela visit. The digital forms infrastructure in a practice management system can enforce these documentation checkpoints before a visit closes.

S06.344S can appear across multiple specialty settings: Neurology, physiatry, primary care, physical therapy, and occupational therapy. All of them treat patients whose current condition traces back to a prior right-cerebrum hemorrhage with the qualifying LOC duration. Practices running physical therapy or occupational therapy workflows for post-TBI rehabilitation should carry that causal link forward in the chart. A biller working from a single encounter note will not always see it.

Coding notes and practical guidance

A few practical points that come up repeatedly in TBI sequela coding, drawn from the Check ICD-10 code database and standard ICD-10-CM guidelines:

No time limit on sequela coding

Unlike some clinical terms that imply a specific post-injury window, sequela codes in ICD-10-CM carry no time restriction. A patient can present 10 years after a traumatic right-cerebrum hemorrhage with documented neurological deficits attributable to that event. S06.344S still applies for the original injury. The residual condition code changes as the clinical picture evolves, but the sequela code does not expire.

Sequela coding and claim sequencing

When a sequela code is the reason for the encounter, sequence it first unless the residual condition is the principal diagnosis. For outpatient visits: The residual condition is typically sequenced as the principal diagnosis – the reason the patient presented. S06.344S follows as a secondary code establishing its etiology. For inpatient encounters: Follow the Uniform Hospital Discharge Data Set (UHDDS) guidelines, which may alter sequencing depending on what was chiefly responsible for the admission.

This sequencing logic is not unique to TBI. The same pattern applies wherever ICD-10-CM offers a 7th-character sequela option: Residual condition first, causative injury code second, for outpatient visits. Clinical documentation software that flags the encounter type at check-in helps coders apply that pattern consistently. Medical billing software built for US practices can catch a mis-sequenced claim before it goes out.

How Pabau supports TBI sequela coding and documentation

A patient’s TBI sequela record often lives in pieces. The original admission summary sits in one system. A neurology follow-up note sits in another. The eventual sequela visit gets charted wherever the patient lands, months or years later. A biller working from just the current visit has no easy way to confirm the four documentation elements this code needs.

Practice management software like Pabau keeps that history in one patient record. A physiatry practice coding a subsequent encounter and a primary care practice coding the eventual sequela visit both work from the same documented timeline. Structured medical forms can prompt for laterality, LOC duration, trauma mechanism, and sequela status right at the point of care. That beats leaving a coder to chase down missing details after a denial arrives.

The outcome is fewer claims kicked back for a missing element. If a payer does ask questions later, there’s a shorter trail to the record behind the code.

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Conclusion

The 7th character is where most TBI sequela claims go wrong, not the code family itself. Coders who treat S06.344S as a routine lookup are the ones who get burned. Sequela status is a judgment call about whether the injury has truly resolved, and getting it wrong is what auditors target.

The practical shift worth making is treating sequela status as a documentation decision. The provider makes that call at the visit, not the biller after the fact. Asking the provider to confirm in the note that the original injury has resolved closes the gap that denials and audits both target.

It costs a line in the progress note. It saves a resubmitted claim. Book a demo to see how Pabau keeps that documentation and the resulting code in the same patient record.

Continue your research

Need to see 7th-character rules applied outside a brain injury? S12.150K shows how the same convention extends to a cervical spine fracture, with extra qualifiers beyond A, D, and S.

Coding a subsequent encounter instead of a sequela? S14.103D covers the D-character rules for a spinal cord injury still in the healing phase.

Need the initial-encounter version of a 7th-character code? S09.399A shows how the A designation applies to a middle and inner ear injury.

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