Skip to content
HCC Buddy home

J96.00 ICD-10-CM Code: Acute respiratory failure, unspecified whether with hypoxia or hypercapnia

ICD-10-CM Code View

HCC Buddy Code Card

Digital ICD-10 code-book layout with official code detail, always-visible risk models, Code Trumping, and Buddy coding guidance.

FY 2026 Apr update / Diseases of the respiratory system (J00-J99) / Other diseases of the respiratory system (J96-J99)

J96.00

Billable / SpecificICD-10-CMOfficial ICD-10-CMCodebook guidance

Acute respiratory failure, unspecified whether with hypoxia or hypercapnia

A sudden, severe condition where the lungs cannot provide enough oxygen to the blood or remove carbon dioxide effectively, with unclear oxygen and carbon dioxide levels.

Buddy the Bee presenting code insight

Buddy Insight

Acute respiratory failure, unspecified whether with hypoxia or hypercapnia, indicates life-threatening inability of the lungs to maintain adequate gas exchange.

CMS-HCC V28

HCC 213

RAF 0.370

CMS-HCC V24

HCC 84

RAF 0.282

ACA/HHS

HCC 127

Varies by metal level

ESRD/PACE

HCC 84

RAF 0.061

RXHCC

N/A

—

Not mapped

Code Book Path

Official
J96Respiratory failure, not elsewhere classified
J96.0Acute respiratory failure
J96.00Acute respiratory failure, unspecified whether with hypoxia or hypercapnia

Inclusion Terms

Official

ICD-10-CM does not list inclusion terms for J96.00 in this effective period.

Excludes 2

Official

ICD-10-CM does not list Excludes 2 notes for J96.00 in this effective period.

Related Child Codes

Official
J96.01Acute respiratory failure with hypoxia
J96.02Acute respiratory failure with hypercapnia

Includes

Official

ICD-10-CM does not list Includes notes for J96.00 in this effective period.

Excludes 1

Official

ICD-10-CM does not list Excludes 1 notes for J96.00 in this effective period.

Code First

Official

ICD-10-CM does not list Code First sequencing instructions for J96.00 in this effective period.

Use Additional

Official

ICD-10-CM does not list Use Additional Code instructions for J96.00 in this effective period.

Code Also

Official

ICD-10-CM does not list Code Also instructions for J96.00 in this effective period.

Buddy Documentation Tip

HCC Buddy guidance
Documentation of acute respiratory failure by the provider (not just abnormal ABG values alone)
Clinical criteria supporting the diagnosis (need for mechanical ventilation, severe respiratory distress, abnormal vital signs)
ABG results if available (to support specification of hypoxia or hypercapnia)
Underlying etiology documented and coded separately

MEAT Support

HCC Buddy guidance
Documentation of acute respiratory failure by the provider (not just abnormal ABG values alone)
Clinical criteria supporting the diagnosis (need for mechanical ventilation, severe respiratory distress, abnormal vital signs)
ABG results if available (to support specification of hypoxia or hypercapnia)
Underlying etiology documented and coded separately

Audit Caution

HCC Buddy guidance
Using this unspecified code when ABG results clearly document hypoxia or hypercapnia — always code to highest specificity
Coding respiratory failure based on abnormal ABG alone without provider documentation explicitly stating respiratory failure
Confusing respiratory distress or insufficiency with respiratory failure — failure implies a more severe level of dysfunction
Failing to query the provider for hypoxia/hypercapnia specification when ABG data is available

Common Mistakes

HCC Buddy guidance
J96.01 — Acute respiratory failure with hypoxia should be used when low oxygen is documented
J96.02 — Acute respiratory failure with hypercapnia should be used when high CO2 is documented
J96.10 — Chronic respiratory failure is for long-standing, not acute, respiratory failure
J96.20 — Acute and chronic respiratory failure is for acute-on-chronic presentations

Current with CMS: FY2026 ICD-10-CM Apr 1 update (effective Apr 1 – Sep 30, 2026) · CMS-HCC V28, 100% phased in for payment year 2026. FY2027 code set already staged for October 1, 2026. How HCC Buddy stays current →

Is J96.00 an HCC code?

Yes. J96.00 (Acute respiratory failure, unspecified whether with hypoxia or hypercapnia) maps to Cardio-Respiratory Failure and Shock under the CMS-HCC V28 risk adjustment model (and Cardio-Respiratory Failure and Shock under V24), with a community non-dual aged RAF of 0.370. It is billable for payment year 2026.

Coder answer: J96.00 is billable and maps to V28 HCC 213, Cardio-Respiratory Failure and Shock. Open it in the Code Book for the tabular path, RAF, and MEAT checklist.

Code
J96.00
Description
Acute respiratory failure, unspecified whether with hypoxia or hypercapnia
HCC (V28)
HCC 213 — Cardio-Respiratory Failure and Shock
RAF
0.370
Billable
Yes
Payment year
2026

HCC Category Mapping

V28HCC 213, Cardio-Respiratory Failure and Shock
0.370
V24HCC 84, Cardio-Respiratory Failure and Shock
0.282
ESRDHCC 84, Cardio-Respiratory Failure and Shock
0.061

Each model's RAF is its CMS base weight for that model's standard population, so weights are not directly comparable across models: CMS-HCC V28 and V24 use Community, Non-Dual, Aged; ESRD uses the dialysis continuing-enrollee model; RxHCC is the Part D continuing-enrollee, non-low-income, aged weight (a larger scale than CMS-HCC). ACA/HHS has no single weight — it varies by metal level. Actual per-patient RAF contribution depends on member segment, interactions, and the model year used by the payer. V28 is the CMS-HCC model phased in over payment years 2024–2026; V24 remains in use during the transition and for historical data.

Work J96.00 in the Code Book — tabular path, V28 RAF, and MEAT checklist →

MEAT Criteria for J96.00

For J96.00 to count as a valid HCC diagnosis in a given encounter, the provider's documentation must show MEAT: Monitor, Evaluate, Assess, or Treat. A diagnosis from a prior year does not carry forward automatically, it has to be re-documented and supported each calendar year.

  • MMonitor: signs, symptoms, disease progression, or lab trending documented in the note
  • EEvaluate: test results, medication response, or physical findings reviewed by the provider
  • AAssess: explicit mention in the assessment or plan with acknowledgment of status
  • TTreat: medication, referral, procedure, therapy, or counseling tied to the diagnosis

Only one of M/E/A/T is required to support the code, but the documentation must be specific enough to show that the provider actually addressed J96.00 during that encounter, not just copy-forwarded from a problem list.

Coder workflow notes

Get the V28 RAF + MEAT cheat sheet

One printable page: confirm a code's V28 HCC status, its RAF weight, and the MEAT your note needs to make it stick. Free, no card.

Free PDF. No card. Unsubscribe anytime.

What This Code Means

J96.00 is the ICD-10-CM diagnosis code for acute respiratory failure, unspecified whether with hypoxia or hypercapnia. A sudden, severe condition where the lungs cannot provide enough oxygen to the blood or remove carbon dioxide effectively, with unclear oxygen and carbon dioxide levels. J96.00 sits in the ICD-10-CM chapter for diseases of the respiratory system (j00-j99), within the section covering other diseases of the respiratory system (j96-j99).

Under the CMS-HCC V28 risk adjustment model, J96.00 maps to Cardio-Respiratory Failure and Shock (HCC 213) with a community, non-dual, aged base RAF weight of 0.370. Under the older V24 model, J96.00 mapped to the same category but with a base RAF weight of 0.282, V28 recalibrated weights across the entire model. V28 is the CMS-HCC risk adjustment model that reached 100% phase-in for payment year 2026, replacing V24 which was used during the PY2024–PY2025 transition.

If hypoxia or hypercapnia status is documented, use more specific codes J96.01 or J96.02 instead. Because J96.00 maps to a payment HCC, the provider's documentation must satisfy MEAT criteria (Monitor, Evaluate, Assess, or Treat) for the encounter to count toward the patient's Medicare Advantage risk adjustment score. When documentation is ambiguous, coders should issue a provider query rather than assume the highest-specificity variant.

HCC Buddy maintains structured V28 and V24 mapping, RAF weights, and MEAT documentation criteria for J96.00 sourced directly from the CMS-HCC risk adjustment model files and the CMS ICD-10-CM code set.

Coding Tips

  • •If hypoxia or hypercapnia status is documented, use more specific codes J96.01 or J96.02 instead
  • •Document the underlying cause (sepsis, pneumonia, ARDS, etc.) as a secondary diagnosis when possible

Clinical Significance

Acute respiratory failure, unspecified whether with hypoxia or hypercapnia, indicates life-threatening inability of the lungs to maintain adequate gas exchange. While it captures the acute severity, this unspecified code represents a documentation opportunity — specifying hypoxia vs. hypercapnia provides clinically actionable information and may eventually affect risk adjustment stratification.

Documentation Requirements

  • ✓Documentation of acute respiratory failure by the provider (not just abnormal ABG values alone)
  • ✓Clinical criteria supporting the diagnosis (need for mechanical ventilation, severe respiratory distress, abnormal vital signs)
  • ✓ABG results if available (to support specification of hypoxia or hypercapnia)
  • ✓Underlying etiology documented and coded separately
  • ✓Treatment plan including ventilatory support and monitoring

Commonly Confused Codes

  • •J96.01: Acute respiratory failure with hypoxia should be used when low oxygen is documented
  • •J96.02: Acute respiratory failure with hypercapnia should be used when high CO2 is documented
  • •J96.10: Chronic respiratory failure is for long-standing, not acute, respiratory failure
  • •J96.20: Acute and chronic respiratory failure is for acute-on-chronic presentations

Child Codes

J96.00Acute respiratory failure, unspecified whether with hypoxia or hypercapnia
HCC 213
J96.01Acute respiratory failure with hypoxia
HCC 213
J96.02Acute respiratory failure with hypercapnia
HCC 213

Code Hierarchy

└J96Respiratory failure, not elsewhere classified└J96.0Acute respiratory failure└J96.00Acute respiratory failure, unspecified whether with hypoxia or hypercapnia
└J96.00Acute respiratory failure, unspecified whether with hypoxia or hypercapnia

Because J96.00 maps to a payment HCC, the documentation must also satisfy MEAT criteria (Monitor, Evaluate, Assess, or Treat) for the encounter to count toward the patient's risk adjustment score.

J96.00 maps to CMS-HCC V28 category 213, Cardio-Respiratory Failure and Shock. See the ICD-10 to HCC mapping hub for how the V28 crosswalk works. Because J96.00 carries a payment HCC, you can see what it adds to a RAF score and check the documentation the chart needs before it is submitted.

More on J96.00

Related condition guides

Referenced in blog posts

Work J96.00 in HCC Buddy

Open J96.00 in the Code Book for the full Index-to-Tabular path, MEAT checklist, and V28 HCC mapping, or in the Encoder to code from a keyword search. Pro includes 7 days to try everything, no card required.

Open in Code BookOpen in EncoderStart Pro