What is ICD-10 code E10.44?

E10.44 is the ICD-10-CM diagnosis code for Type 1 diabetes mellitus with diabetic amyotrophy. Type 1 diabetes with diabetic amyotrophy, a condition causing weakness and wasting of muscles, particularly in the thighs and hips, due to nerve damage from diabetes. E10.44 is a billable code, meaning it can be reported on a claim as a primary or secondary diagnosis when supported by documentation. E10.44 is part of the FY2026 ICD-10-CM code set published by the CMS National Center for Health Statistics and used on Medicare, Medicaid, and commercial claims in the United States.

Yes. E10.44 is a billable ICD-10-CM code that can be reported on professional and institutional claims as a primary or secondary diagnosis when the provider documentation supports the specific condition described. Billable codes in ICD-10-CM are coded to the highest level of specificity available for the documented diagnosis. E10.44 is current for fiscal year 2026 and remains in the active CMS ICD-10-CM code set published by the National Center for Health Statistics.

Which HCC does E10.44 map to under V28?

E10.44 maps to CMS-HCC V28 HCC 37 (Diabetes with Chronic Complications). The category numbers, labels, and conditions come from the CMS-HCC V28 model file for payment year 2026.

2026 ICD-10-CM E10.44: Type 1 diabetes mellitus

E10.44 maps to CMS-HCC V28 37. A source-labeled RAF reference is available. Confirm the documented diagnosis and applicable coding requirements. MEAT criteria · RAF Calculator · HCC coding software

ICD-10-CM Code View

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Code lookupE10.44

Effective periodFY2026 Apr Update (Apr 1-Sep 30)

FY 2026 Apr update / Endocrine, nutritional and metabolic diseases (E00-E89) / Diabetes mellitus (E08-E13)

E10.44

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

Type 1 diabetes mellitus with diabetic amyotrophy

Type 1 diabetes with diabetic amyotrophy, a condition causing weakness and wasting of muscles, particularly in the thighs and hips, due to nerve damage from diabetes.

Buddy Insight

Diabetic amyotrophy in Type 1 diabetes mellitus represents a severe neurological complication causing progressive proximal muscle weakness and wasting, most commonly in the thighs and hips.

Overview Risk Models Code Book Documentation Audit Notes Edition comparison

CMS-HCC V28

Mapped

HCC 37

Diabetes with Chronic Complic...

Code-level coefficient reference

CMS-HCC V24

Historical

Not used for standard CY2026 Medicare Advantage payment. Select a historical period to review V24.

Not used for CY2026 payment

ACA/HHS

N/A

—

Not risk-adjusted for this model/period.

Not mapped

ESRD/PACE

N/A

—

Not risk-adjusted for this model/period.

Not mapped

RXHCC

Mapped

HCC 30

Diabetes with Complications

Code-level coefficient reference

Code Book Path

Official

E10Type 1 diabetes mellitus E10.4Type 1 diabetes mellitus with neurological complications E10.44Type 1 diabetes mellitus with diabetic amyotrophy

Inclusion Terms

Official

No inclusion terms are included in this display for E10.44. Check the code and parent instructions in the Code Book.

Excludes 2

Official

No Excludes 2 notes are included in this display for E10.44. Check the code and parent instructions in the Code Book.

Related Codes

Official

E10.40Type 1 diabetes mellitus with diabetic neuropathy, unspecified E10.41Type 1 diabetes mellitus with diabetic mononeuropathy E10.42Type 1 diabetes mellitus with diabetic polyneuropathy E10.43Type 1 diabetes mellitus with diabetic autonomic (poly)neuropathy E10.49Type 1 diabetes mellitus with other diabetic neurological complication

Includes

Official

brittle diabetes (mellitus)Inherited from E10
diabetes (mellitus) due to autoimmune processInherited from E10
diabetes (mellitus) due to immune mediated pancreatic islet beta-cell destructionInherited from E10
idiopathic diabetes (mellitus)Inherited from E10
juvenile onset diabetes (mellitus)Inherited from E10
ketosis-prone diabetes (mellitus)Inherited from E10

Excludes 1

Official

transitory endocrine and metabolic disorders specific to newborn (P70-P74)Inherited from E00-E89, E10
diabetes mellitus due to underlying condition (E08.-)Inherited from E00-E89, E10
drug or chemical induced diabetes mellitus (E09.-)Inherited from E00-E89, E10
gestational diabetes (O24.4-)Inherited from E00-E89, E10
hyperglycemia NOS (R73.9)Inherited from E00-E89, E10
neonatal diabetes mellitus (P70.2)Inherited from E00-E89, E10
postpancreatectomy diabetes mellitus (E13.-)Inherited from E00-E89, E10
postprocedural diabetes mellitus (E13.-)Inherited from E00-E89, E10
secondary diabetes mellitus NEC (E13.-)Inherited from E00-E89, E10
type 2 diabetes mellitus (E11.-)Inherited from E00-E89, E10

Code First

Official

No Code First sequencing instructions are included in this display for E10.44. Check the code and parent instructions in the Code Book.

Use Additional

Official

No Use Additional Code instructions are included in this display for E10.44. Check the code and parent instructions in the Code Book.

Code Also

Official

No Code Also instructions are included in this display for E10.44. Check the code and parent instructions in the Code Book.

Buddy Documentation Tip

HCC Buddy guidance

Documentation must explicitly state Type 1 diabetes mellitus with diabetic amyotrophy, including the specific muscles affected, degree of weakness or atrophy, and functional limitations.

Providers should record electromyography or nerve conduction study results if performed, along with the causal relationship between diabetes and the muscle wasting.

Physical therapy referrals and progress notes further substantiate the diagnosis.

MEAT Support

HCC Buddy guidance

Documentation must explicitly state Type 1 diabetes mellitus with diabetic amyotrophy, including the specific muscles affected, degree of weakness or atrophy, and functional limitations.

Providers should record electromyography or nerve conduction study results if performed, along with the causal relationship between diabetes and the muscle wasting.

Physical therapy referrals and progress notes further substantiate the diagnosis.

Audit Caution

HCC Buddy guidance

Do not code amyotrophy as generic diabetic neuropathy; the muscle weakness and atrophy pattern is clinically distinct and warrants the specific .44 code. Ensure the diabetes type is confirmed as Type 1 in documentation, as Type 2 with amyotrophy uses E11.

Avoid assigning separate neuropathy and muscle disorder codes since E10.44 is a combination code.

Common Mistakes

HCC Buddy guidance

E10.42 (Type 1 diabetes mellitus with diabetic polyneuropathy) describes generalized nerve damage rather than focal muscle wasting.

E10.49 (other diabetic neurological complication) is a catch-all that should not be used when amyotrophy is specifically documented.

G73.0 (myasthenic syndromes in endocrine diseases) covers neuromuscular junction disorders, not diabetic nerve-muscle degeneration.

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 E10.44 an HCC code?

Yes. E10.44 (Type 1 diabetes mellitus with diabetic amyotrophy) maps to HCC 37, Diabetes with Chronic Complications under the CMS-HCC V28 risk adjustment model, with a source-labeled community non-dual aged reference coefficient of 0.166. Source-labeled code-level coefficients are references, not member totals. Actual contribution depends on complete member context, hierarchy and cleanup rules, interactions, and model year. HCC Buddy's RAF Calculator supports CMS-HCC V28 PY2026 and shows no score unless every required source and calculation check passes. It is billable for payment year 2026.

Coder answer: E10.44 is billable and maps to V28 HCC 37, Diabetes with Chronic Complications. Open it in the Code Book for the tabular path, RAF, and MEAT checklist.

Code: E10.44
Description: Type 1 diabetes mellitus with diabetic amyotrophy
HCC (V28): HCC 37 — Diabetes with Chronic Complications
RAF reference coefficient: 0.166
Billable: Yes
Payment year: 2026

HCC Category Mapping

V28HCC 37, Diabetes with Chronic Complications

0.166

RxHCCHCC 30, Diabetes with Complications

Not separately weighted

These are source-labeled model coefficients, not member totals. A category may still be removed by hierarchy or model cleanup rules. 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 context, hierarchy and cleanup rules, interactions, and the model year used by the payer. V28 is the CMS-HCC model phased in over payment years 2024–2026; V24 remains available for historical review.

Work E10.44 in the Code Book — tabular path, V28 RAF reference, and MEAT checklist →

MEAT review for E10.44

For E10.44, confirm that the documentation supports the diagnosis and meets the applicable coding, encounter, program and payer requirements. MEAT (Monitor, Evaluate, Assess, or Treat) is a review mnemonic, not a universal CMS coding rule.

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

Coder workflow notes

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What This Code Means

E10.44 is the ICD-10-CM diagnosis code for type 1 diabetes mellitus with diabetic amyotrophy. Type 1 diabetes with diabetic amyotrophy, a condition causing weakness and wasting of muscles, particularly in the thighs and hips, due to nerve damage from diabetes. E10.44 sits in the ICD-10-CM chapter for endocrine, nutritional and metabolic diseases (e00-e89), within the section covering diabetes mellitus (e08-e13).

Under the CMS-HCC V28 risk adjustment model, E10.44 maps to Diabetes with Chronic Complications (HCC 37) with a source-labeled community, non-dual, aged reference coefficient of 0.166. No V24 mapping is shown for E10.44; use the applicable model and payment year when reviewing the V28 mapping. For CY2026 non-PACE Medicare Advantage, CMS uses 100% of the 2024 CMS-HCC model (V28). PACE uses a separate model blend. Source-labeled code-level coefficients are references, not member totals. Actual contribution depends on complete member context, hierarchy and cleanup rules, interactions, and model year. HCC Buddy's RAF Calculator supports CMS-HCC V28 PY2026 and shows no score unless every required source and calculation check passes.

Amyotrophy is a specific neurological complication distinct from general diabetic neuropathy; ensure documentation clearly identifies muscle weakness and atrophy. For E10.44, confirm that the documentation supports the diagnosis and meets the applicable coding, encounter, program and payer requirements. MEAT (Monitor, Evaluate, Assess, or Treat) is a review mnemonic, not a universal CMS coding rule. 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, source-labeled coefficient references, and MEAT documentation criteria for E10.44 sourced directly from the CMS-HCC risk adjustment model files and the CMS ICD-10-CM code set.

Coding Tips

•Amyotrophy is a specific neurological complication distinct from general diabetic neuropathy; ensure documentation clearly identifies muscle weakness and atrophy
•This code requires confirmation that the muscle condition is directly related to the diabetes diagnosis

Clinical Significance

Diabetic amyotrophy in Type 1 diabetes mellitus represents a severe neurological complication causing progressive proximal muscle weakness and wasting, most commonly in the thighs and hips. This condition, also known as diabetic lumbosacral radiculoplexus neuropathy, significantly impacts mobility and quality of life. It reflects advanced nerve damage from sustained hyperglycemia and requires aggressive glycemic management and physical rehabilitation.

Documentation Requirements

✓Documentation must explicitly state Type 1 diabetes mellitus with diabetic amyotrophy, including the specific muscles affected, degree of weakness or atrophy, and functional limitations.
✓Providers should record electromyography or nerve conduction study results if performed, along with the causal relationship between diabetes and the muscle wasting.
✓Physical therapy referrals and progress notes further substantiate the diagnosis.

Commonly Confused Codes

•E10.42 (Type 1 diabetes mellitus with diabetic polyneuropathy) describes generalized nerve damage rather than focal muscle wasting.
•E10.49 (other diabetic neurological complication) is a catch-all that should not be used when amyotrophy is specifically documented.
•G73.0 (myasthenic syndromes in endocrine diseases) covers neuromuscular junction disorders, not diabetic nerve-muscle degeneration.